View R1224N_4103025.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

PWM/VFM step-down DC/DC Converter
51 6(5,(6
NO. EA-096-0212
OUTLINE
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FEATURES
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APPLICATIONS
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1
R1224N
BLOCK DIAGRAM
*Fixed Output Voltage Type
OSC VIN VOUT
EXT
+
PWM/VFM CONTROL
Amp +
Vref Soft Start
Protection UVLO
Chip Enable
CE
+ -
Vref
GND
*Adjustable Output Voltage Type
OSC VIN VFB
EXT
+
Amp +
Vref Soft Start
Protection UVLO
Chip Enable
CE
+ -
Vref
GND
2
R1224N
SELECTION GUIDE
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3
R1224N
PIN CONFIGURATION
SOT-23-5
5 4
VIN (mark side) CE GND
EXT VOUT (VFB)
1
2
3
PIN DESCRIPTION
Pin No. Symbol &( *1' 9287 9)% (;7 9,1 Description &KLS (QDEOH 3LQ $FWLYH ZLWK + *URXQG 3LQ 3LQ IRU 0RQLWRULQJ 2XWSXW 9ROWDJH )HHGEDFN 9ROWDJH ([WHUQDO 7UDQVLVWRU 'ULYH 3LQ &026 2XWSXW 3RZHU 6XSSO\ 3LQ
ABSOLUTE MAXIMUM RATINGS
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ELECTRICAL CHARACTERISTICS
* R1224Nxx2X (X=E/F/G/H/L/M) except R1224N102X 7RSW & Symbol 9,1 9287 9287 7 Item 2SHUDWLQJ ,QSXW 9ROWDJH 6WHSGRZQ 2XWSXW 9ROWDJH 6WHSGRZQ 2XWSXW 9ROWDJH 7HPSHUDWXUH &RHIILFLHQW 9,1 9&( 96(7 9 ,287 P$ :KHQ 96(7 9 9,1 9&( 9 & 7RSW & 9,1 9&( 96(7 9 ,287 P$ :KHQ 96(7 9,1 9&( 9 /0 YHUVLRQ (* YHUVLRQ )+ YHUVLRQ & 7RSW & 9,1 9&( 9287 9 ()/0 YHUVLRQ * YHUVLRQ + YHUVLRQ 9,1 9 9&( 9 9287 9 9,1 9 9(;7 9 9287 9 9&( 9 9,1 9 9(;7 9 9287 9 9&( 9 9,1 9&( 9287 9 9,1 9287 9 9&( 9 9,1 9 9287 9 9,1 9 9287 9 ()/ YHUVLRQ 9,1 9&( 9 WR 9 9287 9 9,1 9&( 9 WR 9 9287 9 9,1 96(7 9 ,287 P$ 9&( 996(7 9 9,1 9&( 96(7 9 9287 96(7 99 989/2 9 9 PV PV Conditions Min. 96(7x 96(7 Typ. Max. 96(7x Unit 9 9 SSP &
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5
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6
R1224N
TYPICAL APPLICATION AND APPLICATION HINTS
(1) Fixed Output Voltage Type (R1224Nxx2E/F/G/H/L/M except xx=10)
L PMOS R1 C1 VIN CE C2 EXT GND VOUT SD + C3 LOAD
CE CONTROL
3026 +$70 +LWDFKL 6' & 5 5%/ 5RKP ) &HUDPLF 7\SH
/ &50& 6XPLGD + & ) 7DQWDOXP 7\SH & ) &HUDPLF 7\SH
(2) Adjustable Output Type (R1224N102G/H/M) Example: Output Voltage=3.2V
L + - C1 VIN CE C2 EXT GND PMOS VFB SD R2
R4
R1
C4 R3 + C3 LOAD
CE CONTROL
3026 +$70 +LWDFKL 6' & 5 5%/ 5RKP ) &HUDPLF 7\SH
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5 N 5 N 5 N
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8
R1224N
How to Adjust Output Voltage and about Phase Compensation
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L + - C1 VIN CE C2 EXT GND PMOS VFB SD R2
R4
R1
C4 R3 + C3 LOAD
CE CONTROL
9
R1224N
OPERATION of step-down DC/DC converter and Output Current
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10
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11
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OUTPUT CURRENT AND SELECTION OF EXTERNAL COMPONENTS
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R1224N
External Components
1. Inductor 6HOHFW DQ LQGXFWRU WKDW SHDN FXUUHQW GRHV QRW H[FHHG ,/PD[ ,I ODUJHU FXUUHQW WKDQ DOORZDEOH FXUUHQW IORZV PDJ QHWLF VDWXUDWLRQ RFFXUV DQG PDNH WUDQVIRUP HIILFLHQF\ ZRUVH :KHQ WKH ORDG FXUUHQW LV GHILQLWH WKH VPDOOHU YDOXH RI / WKH ODUJHU WKH ULSSOH FXUUHQW 3URYLGHG WKDW WKH DOORZDEOH FXUUHQW LV ODUJH LQ WKDW FDVH DQG '& FXUUHQW LV VPDOO WKHUHIRUH IRU ODUJH RXWSXW FXU UHQW HIILFLHQF\ LV EHWWHU WKDQ XVLQJ DQ LQGXFWRU ZLWK D ODUJH YDOXH RI / DQG YLFH YHUVD 2. Diode 8VH D GLRGH ZLWK ORZ 9) 6FKRWWN\ W\SH LV UHFRPPHQGHG DQG KLJK VZLWFKLQJ VSHHG 5HYHUVH YROWDJH UDWLQJ VKRXOG EH PRUH WKDQ 9,1 DQG FXUUHQW UDWLQJ VKRXOG EH HTXDO RU PRUH WKDQ ,/PD[ 3. Capacitors $V IRU &,1 XVH D FDSDFLWRU ZLWK ORZ (65 (TXLYDOHQW 6HULHV 5HVLVWDQFH DQG D FDSDFLW\ RI DW OHDVW ) IRU VWDEOH RSHUDWLRQ &287 FDQ UHGXFH ULSSOH RI 2XWSXW 9ROWDJH WKHUHIRUH ) RU PRUH YDOXH RI WDQWDOXP W\SH FDSDFLWRU LV UHFRP PHQGHG 4. Lx Transistor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
13
R1224N
TIMING CHART
VIN VOUT Set Output Voltage UVLO Voltage
Input Voltage Rising Time CE VOUT Set Output Voltage Protection Circuit Delay Time
UVLO Reset
VOUT Set Output Voltage EXT
Reset Protection VOUT Set Output Voltage Stable Operation Stable Operation Stable Operation
VOUT
Soft Start
Soft Start
Soft Start
Soft Start
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14
R1224N
TEST CIRCUITS
A) Output Voltage, Oscillator Frequency, CE "H" Input Voltage, CE "L" Input Voltage, Soft-start time
L1 PMOS
Oscilloscope
D1
EXT GND VOUT
VIN + -
V
+ -
(VFB)
CE
C2
C1
B) Supply Current 1
EXT GND VOUT
(VFB)
C) Standby Current
VIN
A
EXT GND
VIN
A
CE
VOUT
(VFB)
CE
D) EXT "H" Output Current
EXT VIN
E)
EXT "L" Output Current
EXT VIN
A
GND VOUT
(VFB)
A
CE
GND VOUT
(VFB)
CE
F)
CE "H" Input Current, CE "L" Input Current
EXT GND VOUT
(VFB)
G) Output Delay Time for Protection Circuit
EXT Oscilloscope GND VOUT
(VFB)
VIN
VIN + -
CE
A
CE
C2
3026 +$70 +LWDFKL 6' & 5%' 5RKP ) 7DQWDOXP 7\SH
/ &'0& 6XPLGD + & ) 7DQWDOXP 7\SH
15
R1224N
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current (*Note) R1224N182E L=10uH
1.850 1.850
R1224N182F L=10uH
Output Voltage VOUT(V)
1.830 1.810 1.790 VIN3.3V 1.770 1.750 0.1 VIN5V
Output Voltage VOUT(V)
1.830 1.810 1.790 VIN3.3V 1.770 1.750 0.1 VIN5V
1
10
100
1000
10000
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current IOUT(mA)
R1224N182G L=10uH
1.850 1.850
R1224N182H L=10uH
Output Voltage VOUT(V)
Output Voltage VOUT(V)
1.830 1.810 1.790 1.770 1.750 0.1
1.830 1.810 1.790 1.770 1.750 0.1
VIN3.3V VIN5V VIN12V 1 10 100 1000 10000
VIN3.3V VIN5V VIN12V 1 10 100 1000 10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N182L L=27uH
1.850 1.850
R1224N182M L=27uH
Output Voltage VOUT(V)
Output Voltage VOUT(V)
1.830 1.810 1.790 VIN3.3V 1.770 1.750 0.1 VIN5V
1.830 1.810 1.790 1.770 1.750 0.1
VIN3.3V VIN5V VIN12V 1 10 100 1000 10000
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
16
R1224N
R1224N332E L=10uH
3.40 3.400
R1224N332F L=10uH
Output Voltage VOUT(V)
3.380 3.360 3.340 3.320 3.300 3.280 3.260 3.240 3.220 3.200 0.1 VIN4.8V VIN7V
Output Voltage VOUT(V)
3.38 3.36 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3.20 0.1 1 10 100 1000 10000 VIN4.8V VIN7V
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N332G L=10uH
3.400 3.35
R1224N332G (VIN=10V)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
3.380 3.360 3.340 3.320 3.300 3.280 3.260 3.240 3.220 3.200 0.1 1 VIN4.8V VIN12V VIN15V 10 100 1000 10000
3.34 3.33 3.32 3.31 3.30 0.1
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N332G (VIN=16V)
3.35 3.400
R1224N332H L=10uH
Output Voltage VOUT(V)
3.380 3.360 3.340 3.320 3.300 3.280 3.260 3.240 3.220 3.200 0.1 VIN4.8V VIN12V VIN15V 1 10 100 1000 10000
Output Voltage VOUT(V)
3.34 3.33 3.32 3.31 3.30 0.1
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
17
R1224N
R1224N332L L=27uH
3.400 3.400
R1224N332M L=27uH
Output Voltage VOUT(V)
3.380 3.360 3.340 3.320 3.300 3.280 3.260 3.240 3.220 3.200 0.1 VIN4.8V VIN12V VIN15V 1 10 100 1000 10000
Output Voltage VOUT(V)
3.380 3.360 3.340 3.320 3.300 3.280 3.260 3.240 3.220 3.200 0.1 1 10 100 1000 10000 VIN4.8V VIN7V
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N332M (VIN=5V)
3.35 3.35
R1224N332M (VIN=10V)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
3.34 3.33 3.32 3.31 3.30 0 1 2 3 4 5
3.34 3.33 3.32 3.31 3.30 0 1 2 3 4 5
Output Current lOUT(A)
Output Current lOUT(A)
R1224N332M (VIN=18V)
3.35 5.100
R1224N502E L=10uH
Output Voltage VOUT(V)
5.080 5.060 5.040 5.020 5.000 4.980 4.960 4.940 4.920 4.900 VIN6.5V VIN10V
Output Voltage VOUT(V)
3.34 3.33 3.32 3.31 3.30 0 1 2 3 4
0.1
1
10
100
1000
10000
Output Current lOUT(A)
Output Current lOUT(mA)
18
R1224N
R1224N502F L=10uH
5.100 5.100
R1224N502G L=10uH
Output Voltage VOUT(V)
5.080 5.060 5.040 5.020 5.000 4.980 4.960 4.940 4.920 4.900 0.1 VIN6.5V VIN12V VIN15V
Output Voltage VOUT(V)
5.080 5.060 5.040 5.020 5.000 4.980 4.960 4.940 4.920 4.900 0.1 1 10 100 1000 10000 VIN6.5V VIN10V
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N502G (VIN=10V)
5.05 5.05
R1224N502G (VIN=16V)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
5.04 5.03 5.02 5.01 5.00 0.1
5.04 5.03 5.02 5.01 5.00 0.1
1
10
100
1000
10000
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N502H L=10uH
5.100 5.100
R1224N502L L=27uH
Output Voltage VOUT(V)
5.080 5.060 5.040 5.020 5.000 4.980 4.960 4.940 4.920 4.900 0.1 VIN6.5V VIN10V
Output Voltage VOUT(V)
5.080 5.060 5.040 5.020 5.000 4.980 4.960 4.940 4.920 4.900 0.1 1 VIN6.5V VIN12V VIN15V 10 100 1000 10000
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
19
R1224N
R1224N502M L=27uH
5.100
Output Voltage VOUT(V)
5.080 5.060 5.040 5.020 5.000 4.980 4.960 4.940 4.920 4.900 0.1 1
VIN6.5V VIN12V VIN15V
10
100
1000
10000
Output Current lOUT(mA)
2)
Efficiency vs. Output Current (*Note) R1224N182F (VIN=3.3V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N182F (VIN=5.0V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N182G (VIN=3.3V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N182G (VIN=5.0V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
20
R1224N
R1224N182G (VIN=12V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N182H (VIN=3.3V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N182H (VIN=5.0V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N182H (VIN=12V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N182L (VIN=3.3V) CDRH127-27uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N182L (VIN=5.0V) CDRH127-27uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
21
R1224N
R1224N182M (VIN=3.3V) CDRH127-27uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N182M (VIN=5.0V) CDRH127-27uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N182M (VIN=12V) CDRH127-27uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N332E (VIN=7.0V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N332E (VIN=4.8V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N332F (VIN=7.0V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
22
R1224N
R1224N332F (VIN=4.8V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N332G (VIN=12V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N332G (VIN=4.8V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1 100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N332G (VIN=10V)
Efficiency (%)
Efficiency (%)
1
10
100
1000
10000
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N332G (VIN=16V)
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N332G (VIN=15V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
23
R1224N
R1224N332H (VIN=12V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N332H (VIN=4.8V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N332H (VIN=15V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N332L (VIN=7.0V) CDRH127-27uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N332L (VIN=4.8V) CDRH127-27uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N332M (VIN=12V) CDRH127-27uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
24
R1224N
R1224N332M (VIN=4.8V) CDRH127-27uH
100 90 80 70 60 50 40 30 20 10 0 0.1 100 98 96 94 92 90 88 86 84 82 80 0
R1224N332M (VIN=5V)
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
2
3
4
5
Output Current lOUT(mA)
Output Current lOUT(A)
R1224N332M (VIN=10V)
100 98 96 94 92 90 88 86 84 82 80 0 1 2 3 4 5 100 98 96 94 92 90 88 86 84 82 80 0
R1224N332M (VIN=18V)
Efficiency (%)
Efficiency (%)
1
2
3
4
Output Current lOUT(A)
Output Current lOUT(A)
R1224N332M (VIN=15V) CDRH127-27uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N502E (VIN=6.5V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
25
R1224N
R1224N502E (VIN=10V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N502F (VIN=6.5V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N502F (VIN=10V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1 100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N502G (VIN=10V)
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N502G (VIN=16V)
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N502G (VIN=6.5V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
26
R1224N
R1224N502G (VIN=12V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N502G (VIN=15V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N502H (VIN=6.5V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N502H (VIN=12V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N502H (VIN=15V) CDRH127-10uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N502L (VIN=6.5V) CDRH127-27uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
1
10
100
1000
10000
Efficiency (%)
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
27
R1224N
R1224N502L (VIN=10V) CDRH127-27uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N502M (VIN=6.5V) CDRH127-27uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
Efficiency (%)
1
10
100
1000
10000
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N502M (VIN=12V) CDRH127-27uH
100 90 80 70 60 50 40 30 20 10 0 0.1
R1224N502M (VIN=15V) CDRH127-27uH
100 90 80 70 60 50 40 30 20 10 0 0.1
Efficiency (%)
Efficiency (%)
1
10
100
1000
10000
1
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
1RWH 7\SLFDO FKDUDFWHULVWLFV DUH REWDLQHG ZLWK XVLQJ WKH IROORZLQJ FRPSRQHQWV 3026 ,5) ,5 / 6' & &'5+0& 6XPLGD + 5%/ 5RKP 6& 6DQ\R26FRQ )9 x & ) &HUDPLF 7\SH & 6$ 6DQ\R26FRQ )9 5
28
R1224N
3)
Ripple Voltage vs. Output Current R1224N182E L=10uH
70 70
R1224N182F L=10uH
Ripple Voltage Vrpp(mV)
60 VIN3.3V 50 40 30 20 10 0 0.1 1 10 100 1000 10000 VIN5V
Ripple Voltage Vrpp(mV)
60 VIN3.3V 50 40 30 20 10 0 0.1 1 10 100 1000 10000 VIN5V
Output Current IOUT(mA)
Output Current IOUT(mA)
R1224N182G L=10uH
70 70
R1224N182H L=10uH
Ripple Voltage Vrpp(mV)
60 50 40 30 20 10 0 0.1 1 10 100 1000 10000 VIN3.3V VIN5V VIN12V
Ripple Voltage Vrpp(mV)
60 50 40 30 20 10 0 0.1 1
VIN3.3V VIN5V VIN12V
10
100
1000
10000
Output Current IOUT(mA)
Output Current IOUT(mA)
R1224N182L L=27uH
70 70
R1224N182M L=27uH
Ripple Voltage Vrpp(mV)
60 50 40 30 20 10 0 0.1 1 10 100 1000 10000 VIN3.3V VIN5V VIN12V
Ripple Voltage Vrpp(mV)
60 VIN3.3V 50 40 30 20 10 0 0.1 1 10 100 1000 10000 VIN5V
Output Current IOUT(mA)
Output Current IOUT(mA)
29
R1224N
R1224N332E L=10uH
70 70
R1224N332F L=10uH
Ripple Voltage Vrpp(mV)
60 VIN4.8V 50 40 30 20 10 0 0.1 1 10 100 1000 10000 VIN7V
Ripple Voltage Vrpp(mV)
60 VIN4.8V 50 40 30 20 10 0 0.1 1 10 100 1000 10000 VIN7V
Output Current IOUT(mA)
Output Current IOUT(mA)
R1224N332G L=10uH
70 70
R1224N332H L=10uH
Ripple Voltage Vrpp(mV)
60 50 40 30 20 10 0 0.1 1 10 100 1000 10000 VIN4.8V VIN12V VIN15V
Ripple Voltage Vrpp(mV)
60 50 40 30 20 10 0 0.1 1
VIN4.8V VIN12V VIN15V
10
100
1000
10000
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N332L L=27uH
70 70
R1224N332M L=27uH
Ripple Voltage Vrpp(mV)
60 50 40 30 20 10 0 0.1 1 10 100 1000 10000 VIN4.8V VIN12V VIN15V
Ripple Voltage Vrpp(mV)
60 VIN4.8V 50 40 30 20 10 0 0.1 1 10 100 1000 10000 VIN7V
Output Current lOUT(mA)
Output Current lOUT(mA)
30
R1224N
R1224N502E L=10uH
70 70
R1224N502F L=10uH
Ripple Voltage Vrpp(mV)
60 VIN6.5V 50 40 30 20 10 0 0.1 1 10 100 1000 10000 VIN10V
Ripple Voltage Vrpp(mV)
60 VIN6.5V 50 40 30 20 10 0 0.1 1 10 100 1000 10000 VIN10V
Output Current lOUT(mA)
Output Current lOUT(mA)
R1224N502G L=10uH
70 70
R1224N502H L=10uH
Ripple Voltage Vrpp(mV)
60 50 40 30 20 10 0 0.1 1 10 100 1000 10000 VIN6.5V VIN12V VIN15V
Ripple Voltage Vrpp(mV)
60 50 40 30 20 10 0 0.1 1
VIN6.5V VIN12V VIN15V
10
100
1000
10000
Output Current IOUT(mA)
Output Current IOUT(mA)
R1224N502L L=27uH
70 70
R1224N502M L=27uH
Ripple Voltage Vrpp(mV)
60 50 40 30 20 10 0 0.1 1 10 100 1000 10000 VIN6.5V VIN12V VIN15V
Ripple Voltage Vrpp(mV)
60 VIN6.5V 50 40 30 20 10 0 0.1 1 10 100 1000 10000 VIN10V
Output Current IOUT(mA)
Output Current IOUT(mA)
31
R1224N
4)
Output Voltage vs. Input Voltage R1224N182E L=10uH
2.00 2.00
R1224N182F L=10uH
Output Voltage VOUT(V)
1.95 1.90 1.85 1.80 1.75 1.70 1.65 1.60 0 1mA 500mA 5 10 15 20
Output Voltage VOUT(V)
1.95 1.90 1.85 1.80 1.75 1.70 1.65 1.60 0 5 10 15 20 1mA 500mA
Input Voltage VIN(V)
Input Voltage VIN(V)
R1224N182G L=10uH
2.00 2.00
R1224N182H L=10uH
Output Voltage VOUT(V)
1.95 1.90 1.85 1.80 1.75 1.70 1.65 1.60 0 -1mA -500mA 5 10 15 20
Output Voltage VOUT(V)
1.95 1.90 1.85 1.80 1.75 1.70 1.65 1.60 0 5 10 15 20 -1mA -500mA
Input Voltage VIN(V)
Input Voltage VIN(V)
R1224N182L L=27uH
2.00 2.00
R1224N182M L=27uH
Output Voltage VOUT(V)
1.95 1.90 1.85 1.80 1.75 1.70 1.65 1.60 0 1mA 500mA 5 10 15 20
Output Voltage VOUT(V)
1.95 1.90 1.85 1.80 1.75 1.70 1.65 1.60 0 5 10 15 20 1mA 500mA
Input Voltage VIN(V)
Input Voltage VIN(V)
32
R1224N
R1224N332E L=10uH
3.40 3.40
R1224N332F L=10uH
Output Voltage VOUT(V)
3.38 3.36 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3.20 0 1mA 500mA 5 10 15 20
Output Voltage VOUT(V)
3.38 3.36 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3.20 0 5 10 15 20 1mA 500mA
Input Voltage VIN(V)
Input Voltage VIN(V)
R1224N332G L=10uH
3.40 3.40
R1224N332H L=10uH
Output Voltage VOUT(V)
3.38 3.36 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3.20 0 -1mA -500mA 5 10 15 20
Output Voltage VOUT(V)
3.38 3.36 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3.20 0 5 10 15 20 -1mA -500mA
Input Voltage VIN(V)
Input Voltage VIN(V)
R1224N332L L=27uH
3.40 3.40
R1224N332M L=27uH
Output Voltage VOUT(V)
3.38 3.36 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3.20 0 1mA 500mA 5 10 15 20
Output Voltage VOUT(V)
3.38 3.36 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3.20 0 5 10 15 20 1mA 500mA
Input Voltage VIN(V)
Input Voltage VIN(V)
33
R1224N
R1224N502E L=10uH
5.20 5.20
R1224N502F L=10uH
Output Voltage VOUT(V)
5.15 5.10 5.05 5.00 4.95 4.90 4.85 4.80 0 1mA 500mA 5 10 15 20
Output Voltage VOUT(V)
5.15 5.10 5.05 5.00 4.95 4.90 4.85 4.80 0 5 10 15 20 1mA 500mA
Input Voltage VIN(V)
Input Voltage VIN(V)
R1224N502G L=10uH
5.20
R1224N502H L=10uH
5.20
Output Voltage VOUT(V)
Output Voltage VOUT(V)
5.15 5.10 5.05 5.00 4.95 4.90 4.85 4.80 0
-1mA -500mA
5.15 5.10 5.05 5.00 4.95 4.90 4.85 4.80 0 -1mA -500mA 5 10 15 20
5
10
15
20
Input Voltage VIN(V)
Input Voltage VIN(V)
R1224N502L L=27uH
5.20 5.20
R1224N502M L=27uH
Output Voltage VOUT(V)
5.15 5.10 5.05 5.00 4.95 4.90 4.85 4.80 0 1mA 500mA 5 10 15 20
Output Voltage VOUT(V)
5.15 5.10 5.05 5.00 4.95 4.90 4.85 4.80 0 5 10 15 20 1mA 500mA
Input Voltage VIN(V)
Input Voltage VIN(V)
34
R1224N
5)
Output Voltage vs. Temperature R1224N332E
3.33 1.210
R1224N122F
Output Voltage VOUT(V)
Output Voltage VOUT(V)
3.32 3.31 3.30 3.29 3.28 3.27 -40
1.205
1.200
1.195
-15
10
35
60
85
1.190 -40
-15
10
35
60
85
Temperature Topt(C)
Temperature Topt(C)
R1224N602L
6.10 1.010
R1224N102G
Output Voltage VOUT(V)
Output Voltage VOUT(V)
6.05
1.005
6.00
1.000
5.95
0.995
5.90 -40
-15
10
35
60
85
0.990 -40
-15
10
35
60
85
Temperature Topt(C)
Temperature Topt(C)
6)
Oscillator Frequency vs. Temperature R1224N102G
Oscillator Frequency fosc(kHz) Oscillator Frequency fosc(kHz)
360 600
R1224N102H
330
550
300
500
270
450
240 -40
-15
10
35
60
85
400 -40
-15
10
35
60
85
Temperature Topt(C)
Temperature Topt(C)
35
R1224N
R1224N102M
Oscillator Frequency fosc(kHz)
216
198
180
162
144 -40
-15
10
35
60
85
Temperature Topt(C)
7)
Supply Current vs. Temperature R1224N332E
25 25
R1224N602L
Supply Current1 Iss1(A)
Supply Current1 Iss1(A)
20 15 10 5 0 -40
20 15 10 5 0 -40
-15
10
35
60
85
-15
10
35
60
85
Temperature Topt(C)
Temperature Topt(C)
R1224N602F
25 40
R1224N102G
Supply Current1 Iss1(A)
Supply Current1 Iss1(A)
20 15 10 5 0 -40
30
20
10
-15
10
35
60
85
0 -40
-15
10
35
60
85
Temperature Topt(C)
Temperature Topt(C)
36
R1224N
R1224N102H
60 40
R1224N102M
Supply Current1 Iss1(A)
Supply Current1 Iss1(A)
50 40 30 20 10 0 -40
30
20
10
-15
10
35
60
85
0 -40
-15
10
35
60
85
Temperature Topt(C)
Temperature Topt(C)
8)
Soft-start time vs. Temperature R1224N102G
15
Soft-start time Tsoft(ms)
10
5 -40
-15
10
35
60
85
Temperature Topt(C)
9)
Delay Time for Protection vs. Temperature R1224N332E
Delay Time for Protection Tprot(ms)
30
25
20
15
10 -40
-15
10
35
60
85
Temperature Topt(C)
37
R1224N
10) EXT "H" Output Current vs. Temperature R1224N332E
EXT "H" Output Current IEXTH(mA)
-10
-15
-20
-25 -40
-15
10
35
60
85
Temperature Topt(C)
11) EXT "L" Output Current vs. Temperature R1224N332E
EXT "L" Output Current IEXTL(mA)
50
40
30
20 -40
-15
10
35
60
85
Temperature Topt(C)
12) Load Transient Response R1224N332G L=10uH VIN=4.8V
3.50 2000 3.50
R1224N332G L=10uH VIN=4.8V
2000 1600 1400 1200 1000 800 600 400 200 0 0.08
Output Current IOUT(mA)
3.30 3.20 3.10 3.00 2.90 2.80 2.70 2.60 2.50 -0 -0 0
1600 1400 1200 1000 800 600 400 200 0 1E-04 2E-04 3E-04 4E-04
3.40 3.35 3.30 3.25 3.20 3.15 3.10 3.05 3.00 -0.04 -0.02
0
0.02
0.04
0.06
Time(sec)
Time(sec)
38
Output Current IOUT(mA)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
3.40
1800
3.45
1800
R1224N
R1224N332G L=10uH VIN=10V
3.50 2000 3.50
R1224N332G L=10uH VIN=10V
2000 1600 1400 1200 1000 800 600 400 200 0 0.08
Output Current IOUT(mA)
3.30 3.20 3.10 3.00 2.90 2.80 2.70
1600 1400 1200 1000 800 600 400
3.40 3.35 3.30 3.25 3.20 3.15 3.10 3.05 3.00 -0.04 -0.02
2.60 200 2.50 0 -0.0002 -0.0001 0.0000 0.0001 0.0002 0.0003 0.0004
0
0.02
0.04
0.06
Time(sec)
Time(sec)
R1224N332H L=10uH VIN=4.8V
3.50 2000 3.50
R1224N332H L=10uH VIN=4.8V
2000 1600 1400 1200 1000 800 600 400 200 0 0.08
Output Current IOUT(mA)
3.30 3.20 3.10 3.00 2.90 2.80 2.70 2.60 2.50 -2E-04 -1E-04
1600 1400 1200 1000 800 600 400 200 0 1E-04 2E-04 3E-04 4E-04
3.40 3.35 3.30 3.25 3.20 3.15 3.10 3.05 3.00 -0.04 -0.02
0
0
0.02
0.04
0.06
Time(sec)
Time(sec)
R1224N332H L=10uH VIN=10V
3.50 2000 3.50
R1224N332H L=10uH VIN=10V
2000 1600 1400 1200 1000 800 600 400 200 0 0.0001 0.0002 0.0003 0.0004
Output Current IOUT(mA)
3.30 3.20 3.10 3.00 2.90 2.80 2.70 2.60 2.50 -2E-04 -1E-04
1600 1400 1200 1000 800 600 400 200 0 1E-04 2E-04 3E-04 4E-04
3.30 3.20 3.10 3.00 2.90 2.80 2.70 2.60 2.50 -2E-04 -1E-04
0
0
Time(sec)
Time(sec)
Output Current IOUT(mA)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
3.40
1800
3.40
1800
Output Current IOUT(mA)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
3.40
1800
3.45
1800
Output Current IOUT(mA)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
3.40
1800
3.45
1800
39
R1224N
R1224N332M L=27uH VIN=4.8V
3.50 2000 3.50
R1224N332M L=27uH VIN=4.8V
2000 1600 1400 1200 1000 800 600 400 200 0 0.08
Output Current IOUT(mA)
3.30 3.20 3.10 3.00 2.90 2.80 2.70 2.60 2.50 -2E-04 -1E-04
1600 1400 1200 1000 800 600 400 200 0 0.0001 0.0002 0.0003 0.0004
3.40 3.35 3.30 3.25 3.20 3.15 3.10 3.05 3.00 -0.04 -0.02
0
0
0.02
0.04
0.06
Time(sec)
Time(sec)
R1224N332M L=27uH VIN=10V
3.50 2000 3.50
R1224N332M L=27uH VIN=10V
2000 1600 1400 1200 1000 800 600 400 200 0 0.08
Output Current IOUT(mA)
3.30 3.20 3.10 3.00 2.90 2.80 2.70 2.60 2.50 -2E-04 -1E-04
1600 1400 1200 1000 800 600 400 200 0 1E-04 2E-04 3E-04 4E-04
3.40 3.35 3.30 3.25 3.20 3.15 3.10 3.05 3.00 -0.04 -0.02
0
0
0.02
0.04
0.06
Time(sec)
Time(sec)
13) UVLO Voltage vs. Temperature R1224N332E
2.20
UVLO Voltage VUVLO(V)
2.15 2.10 2.05 2.00 1.95 1.90 -40
-15
10
35
60
85
Temperature Topt(C)
40
Output Current IOUT(mA)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
3.40
1800
3.45
1800
Output Current IOUT(mA)
Output Voltage VOUT(V)
Output Voltage VOUT(V)
3.40
1800
3.45
1800

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