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 ELM99xxxA
GENERAL DESCRIPTION
LOW SATURATION VOLTAGE REGULATOR
ELM99xxxA series is CMOS voltage regulator providing large current. It consists of devices including reference voltage source, error amplifier, low resistance output transistor, short-circuit protection circuit, output voltage setting resistor, chip-enable circuit. Output voltage is fixed internally with high accuracy. ELM99xxxA provides excellent characteristics, such as small input-output voltage difference due to low resistance output transistor, high load stability due to high gain error amplifier. The chip-enable function is available in three selections, no-chip enable function, active-low ("L" active) and active-high ("H" active). The package is SOT-89-3 or SOT-89-5. SOT-89-5 is used for chip enable version.
FEATURES
Maximum output current High accuracy of output voltage Small input-output voltage differential Low stand-by current consumption High load stability High input stability Output voltage range Short-circuit current limiter Chip-enable pin available : 300mA (Intenal current limiter operates in case load current exceeds 300mA.) : 2.0% : TYP. 140mV (ELM9930xA IOUT=40mA) : TYP. 0.1 A (ELM99xx3A) : TYP. 5mV (1mA Iout 100mA) : TYP. 0.15%/V (ELM9930xA IOUT=40mA) : 2.0V 6.0V ( 0.1V steps ) : TYP. 70mA (VOUT=0V) : "L"active ELM99xx2A, "H"active ELM99xx3A Palmtops cameras and video recorders Battery-operated devices
APPLICATION
Cellular telephones Laptop and notebook computers Reference voltage sources PCMCIA cards
PIN CONFIGURATION
1.ELM99xx1A 2.ELM99xx2A
5 4
3.ELM99xx3A
5 4
SOT-89
SOT-89-5
SOT-89-5
1
2
3
1
2
3
1
2
3
( TOP VIEW )
( TOP VIEW )
( TOP VIEW )
SOT-89 Pin No. Pin Name 1 VSS 2 VIN 3 VOUT
SOT-89-5 Pin No. Pin Name 1 VSS 2 VIN 3 VOUT 4 NC 5 CE
SOT-89-5 Pin No. Pin Name 1 VSS 2 VIN 3 VOUT 4 NC 5 CE
220
LOW SATURATION VOLTAGE REGULATOR
SELECTION GUIDE
Symbol Ex a, b Output Voltage 27 : VOUT = 2.7V 30 : VOUT = 3.0V 33 : VOUT = 3.3V 50 : VOUT = 5.0V CE = "L"active CE = "H"active A Version
ELM99xxxA
ELM99 x x x A abcd
c d
CE Selection Product Version
1: 2: 3: A:
MARKING ELM99xx1A
SOT-89
: Represents the integer digit of the Output Voltage
Symbol A B C Symbol A B C D E Output Voltage 2.*V 3.*V 4.*V Output Voltage *.0V *.1V *.2V *.3V *.4V Symbol F G H J K Output Voltage *.5V *.6V *.7V *.8V *.9V Symbol D E Output Voltage 5.*V 6.*V

: Represents the decimal digit of the Output Voltage
: Represents the assembly lot number A Z repeated (I,O,X excepted) : Represents the assembly lot number 0 9 repeated
221
LOW SATURATION VOLTAGE REGULATOR
ELM99xxxA
ELM99xx2A
SOT-89-5
: Represents the integer digit of the Output Voltage
Symbol Output Voltage 2.*V 3.*V 4.*V Output Voltage *.0V *.1V *.2V *.3V *.4V Symbol J K Output Voltage 5.*V 6.*V F G H

: Represents the decimal digit of the Output Voltage
Symbol A B C D E Symbol F G H J K Output Voltage *.5V *.6V *.7V *.8V *.9V
: Represents the assembly lot number A Z repeated (I,O,X excepted) : Represents the assembly lot number 0 9 repeated
ELM99xx3A
: Represents the integer digit of the Output Voltage
Symbol L M N Output Voltage 2.*V 3.*V 4.*V Symbol P Q Output Voltage 5.*V 6.*V
: Represents the decimal digit of the Output Voltage
Symbol A B C D E Output Voltage *.0V *.1V *.2V *.3V *.4V Symbol F G H J K Output Voltage *.5V *.6V *.7V *.8V *.9V
: Represents the assembly lot number A Z repeated (I,O,X excepted) : Represents the assembly lot number 0 9 repeated
222
LOW SATURATION VOLTAGE REGULATOR
BLOCK DIAGRAM
ELM99xx1A
VIN VOUT
ELM99xxxA
ELM99xx2A, ELM99xx3A
VIN VOUT
+
Protect Circuit
+
Protect Circuit
Vref
Vref
VSS
Control Circuit
VSS
CE/CE
* CE : ELM99xx2A, CE : ELM99xx3A
STANDARD CIRCUIT
ELM99xx1A ELM99xx2A, ELM99xx3A
Control Voltage CE/CE
VIN VIN VOUT VOUT CO VSS
VIN
VIN
ELM99xx1A
ELM99xx2A ELM99xx3A
VSS
VOUT
VOUT
CI
CI
CO
* CE : ELM99xx2A, CE : ELM99xx3A
MAXIMUM ABSOLUTE RATINGS
Parameter Input Voltage CE/CE Input Voltage Output Voltage Output Current Power Dissipation Operating Temperature Storage Temperature Sym. VIN VCE VOUT IOUT SOT-89 Pd SOT-89-5 Top Tstg Limits
(VSS=0V) Units V V V mA mW
12 VSS-0.3VIN+0.3 VSS-0.3VIN+0.3 500 300 500 -30+80 -40+125
* Output current must not exceed power dissipation specified in Maximum Absolute Ratings.
223
LOW SATURATION VOLTAGE REGULATOR
ELECTRICAL CHARACTERISTICS ELM99271A
Parameter Output Voltage Output Current Load Stability Input/Output Voltage Differential Current Consumption Input Stability Input Voltage Output Voltage Temp. Characteristics Short-circuit Current Symbol VOUT IOUT VOUT IOUT Vdif ISS VOUT VIN VIN VOUT Top Ilim Conditions
ELM99xxxA
Min. 2.646 150
Typ. 2.700 260 5 155 25 0.15
(Top=25) Max. Units 2.754 V mA 15 255 45 0.30 8.0 mV mV A %/V V ppm/ mA
VIN=3.7V, IOUT=40mA VIN=3.7V, Lower by 0.1V than VOUT VIN=3.7V 1mAIOUT100mA IOUT=40mA VIN=3.7V No-load 3.7VVIN8.0V IOUT=40mA VIN=3.7V, IOUT=40mA -30Top+80 VOUT=0V
100 70
ELM99301A
Parameter Output Voltage Output Current Load Stability Input/Output Voltage Differential Current Consumption Input Stability Input Voltage Output Voltage Temp. Characteristics Short-circuit Current Symbol VOUT IOUT VOUT IOUT Vdif ISS VOUT VIN VIN VOUT Top Ilim Conditions VIN=4.0V, IOUT=40mA VIN=4.0V, Lower by 0.1V than VOUT VIN=4.0V 1mAIOUT100mA IOUT=40mA VIN=4.0V No-load 4.0VVIN8.0V IOUT=40mA VIN=4.0V, IOUT=40mA -30Top+80 VOUT=0V Min. 2.940 160 Typ. 3.000 290 5 140 25 0.15 15 220 45 0.30 8.0 100 70 Max. 3.060
(Top=25) Units V mA mV mV A %/V V ppm/ mA
224
LOW SATURATION VOLTAGE REGULATOR
ELM99xxxA
ELM99331A
Parameter Output Voltage Output Current Load Stability Input/Output Voltage Differential Current Consumption Input Stability Input Voltage Output Voltage Temp. Characteristics Short-circuit Current Symbol VOUT IOUT VOUT IOUT Vdif ISS VOUT VIN VIN VOUT Top Ilim Conditions VIN=4.3V, IOUT=40mA VIN=4.3V, Lower by 0.1V than VOUT VIN=4.3V 1mAIOUT100mA IOUT=40mA VIN=4.3V No-load 4.3VVIN8.0V IOUT=40mA VIN=4.3V, IOUT=40mA -30Top+80 VOUT=0V Min. 3.234 170 Typ. 3.300 300 5 125 25 0.15
(Top=25) Max. Units 3.366 V mA 15 210 45 0.30 8.0 mV mV A %/V V ppm/ mA
100 70
ELM99501A
Parameter Output Voltage Output Current Load Stability Input/Output Voltage Differential Current Consumption Input Stability Input Voltage Output Voltage Temp. Characteristics Short-circuit Current Symbol VOUT IOUT VOUT IOUT Vdif ISS VOUT VIN VIN VOUT Top Ilim Conditions VIN=6.0V, IOUT=40mA VIN=6.0V, Lower by 0.1V than VOUT VIN=6.0V 1mAIOUT100mA IOUT=40mA VIN=6.0V No-load 6.0VVIN8.0V IOUT=40mA VIN=6.0V, IOUT=40mA -30Top+80 VOUT=0V Min. 4.900 200 Typ. 5.000 330 5 105 30 0.15 15 170 55 0.30 8.0 100 70 Max. 5.100
(Top=25) Units V mA mV mV A %/V V ppm/ mA
225
LOW SATURATION VOLTAGE REGULATOR
ELM99272A
Parameter Output Voltage Output Current Load Stability Input/Output Voltage Differential Current Consumption Stand-by Current Consumption Input Stability Input Voltage Output Voltage Temp. Characteristics Short-circuit Current CEInput Voltage "H" CEInput Voltage "L" CEInput Current "H" CEInput Current "L" Symbol VOUT IOUT VOUT IOUT Vdif ISS Istandby VOUT VIN VIN VOUT Top Ilim VCEH VCEL ICEH ICEL Conditions
ELM99xxxA
(Top=25) Max. Units 2.754 V mA 15 255 45 0.1 0.30 8.0 mV mV A A %/V V ppm/ mA V V A A
Min. 2.646 150
Typ. 2.700 260 5 155 25 0.005 0.15
VIN=3.7V, IOUT=40mA VIN=3.7V, Lower by 0.1V than VOUT VIN=3.7V 1mAIOUT100mA IOUT=40mA VIN=3.7V VIN=VCE=3.7V 3.7VVIN8.0V IOUT=40mA VIN=3.7V, IOUT=40mA -30Top+80 VOUT=0V VIN=8.0V VIN=2.0V VCE=VIN VCE=VSS
100 70 1.80 0 -1.5 0 -0.4 VIN 0.25 0.2
ELM99302A
Parameter Output Voltage Output Current Load Stability Input/Output Voltage Differential Current Consumption Stand-by Current Consumption Input Stability Input Voltage Output Voltage Temp. Characteristics Short-circuit Current CEInput Voltage "H" CEInput Voltage "L" CEInput Current "H" CEInput Current "L" Symbol VOUT IOUT VOUT IOUT Vdif ISS Istandby VOUT VIN VIN VOUT Top Ilim VCEH VCEL ICEH ICEL Conditions VIN=4.0V, IOUT=40mA VIN=4.0V, Lower by 0.1V than VOUT VIN=4.0V 1mAIOUT100mA IOUT=40mA VIN=4.0V VIN=VCE=4.0V 4.0VVIN8.0V IOUT=40mA VIN=4.0V, IOUT=40mA -30Top+80 VOUT=0V VIN=8.0V VIN=2.0V VCE=VIN VCE=VSS Min. 2.940 160 Typ. 3.000 290 5 140 25 0.005 0.15
(Top=25) Max. Units 3.060 V mA 15 220 45 0.1 0.30 8.0 mV mV A A %/V V ppm/ VIN 0.25 0.2 mA V V A A
100 70 1.80 0 -1.5 0 -0.4
226
LOW SATURATION VOLTAGE REGULATOR
ELM99332A
Parameter Output Voltage Output Current Load Stability Input/Output Voltage Differential Current Consumption Stand-by Current Consumption Input Stability Input Voltage Output Voltage Temp. Characteristics Short-circuit Current CEInput Voltage "H" CEInput Voltage "L" CEInput Current "H" CEInput Current "L" Symbol VOUT IOUT VOUT IOUT Vdif ISS Istandby VOUT VIN VIN VOUT Top Ilim VCEH VCEL ICEH ICEL Conditions
ELM99xxxA
(Top=25) Max. Units 3.366 V mA 15 210 45 0.1 0.30 8.0 mV mV A A %/V V ppm/ mA V V A A
Min. 3.234 170
Typ. 3.300 300 5 125 25 0.005 0.15
VIN=4.3V, IOUT=40mA VIN=4.3V, Lower by 0.1V than VOUT VIN=4.3V 1mAIOUT100mA IOUT=40mA VIN=4.3V VIN=VCE=4.3V 4.3VVIN8.0V IOUT=40mA VIN=4.3V, IOUT=40mA -30Top+80 VOUT=0V VIN=8.0V VIN=2.0V VCE=VIN VCE=VSS
100 70 1.80 0 -1.5 0 -0.4 VIN 0.25 0.2
ELM99502A
Parameter Output Voltage Output Current Load Stability Input/Output Voltage Differential Current Consumption Stand-by Current Consumption Input Stability Input Voltage Output Voltage Temp. Characteristics Short-circuit Current CEInput Voltage "H" CEInput Voltage "L" CEInput Current "H" CEInput Current "L" Symbol VOUT IOUT VOUT IOUT Vdif ISS Istandby VOUT VIN VIN VOUT Top Ilim VCEH VCEL ICEH ICEL Conditions VIN=6.0V, IOUT=40mA VIN=6.0V, Lower by 0.1V than VOUT VIN=6.0V 1mAIOUT100mA IOUT=40mA VIN=6.0V VIN=VCE=6.0V 6.0VVIN8.0V IOUT=40mA VIN=6.0V, IOUT=40mA -30Top+80 VOUT=0V VIN=8.0V VIN=2.0V VCE=VIN VCE=VSS Min. 4.900 200 Typ. 5.000 330 5 105 30 0.005 0.15
(Top=25) Max. Units 5.100 V mA 15 170 55 0.1 0.30 8.0 mV mV A A %/V V ppm/ VIN 0.25 0.2 mA V V A A
100 70 1.80 0 -1.5 0 -0.4
227
LOW SATURATION VOLTAGE REGULATOR
ELM99273A
Parameter Output Voltage Output Current Load Stability Input/Output Voltage Differential Current Consumption Stand-by Current Consumption Input Stability Input Voltage Output Voltage Temp. Characteristics Short-circuit Current CEInput Voltage "H" CEInput Voltage "L" CEInput Current "H" CEInput Current "L" Symbol VOUT IOUT VOUT IOUT Vdif ISS Istandby VOUT VIN VIN VOUT Top Ilim VCEH VCEL ICEH ICEL
ELM99xxxA
(Top=25) Max. Units 2.754 V mA
Conditions VIN=3.7V, IOUT=40mA VIN=3.7V, Lower by 0.1V than VOUT VIN=3.7V 1mAIOUT100mA IOUT=40mA VIN=3.7V VIN=3.7V, VCE=VSS 3.7VVIN8.0V IOUT=40mA VIN=3.7V, IOUT=40mA -30Top+80 VOUT=0V VIN=8.0V VIN=2.0V VCE=VIN VCE=VSS
Min. 2.646 150
Typ. 2.700 260
5 155 25 0.1 0.15
15 255 45 0.5 0.30 8.0
mV mV A A %/V V ppm/
100 70 1.80 0 -0.2 0.4 0 VIN 0.25 1.5
mA V V A A
ELM99303A
Parameter Output Voltage Output Current Load Stability Input/Output Voltage Differential Current Consumption Stand-by Current Consumption Input Stability Input Voltage Output Voltage Temp. Characteristics Short-circuit Current CEInput Voltage "H" CEInput Voltage "L" CEInput Current "H" CEInput Current "L" Symbol VOUT IOUT VOUT IOUT Vdif ISS Istandby VOUT VIN VIN VOUT Top Ilim VCEH VCEL ICEH ICEL Conditions VIN=4.0V, IOUT=40mA VIN=4.0V, Lower by 0.1V than VOUT VIN=4.0V 1mAIOUT100mA IOUT=40mA VIN=4.0V VIN=4.0V, VCE=VSS 4.0VVIN8.0V IOUT=40mA VIN=4.0V, IOUT=40mA -30Top+80 VOUT=0V VIN=8.0V VIN=2.0V VCE=VIN VCE=VSS Min. 2.940 160 Typ. 3.000 290 5 140 25 0.1 0.15
(Top=25) Max. Units 3.060 V mA 15 220 45 0.5 0.30 8.0 mV mV A A %/V V ppm/ VIN 0.25 1.5 mA V V A A
100 70 1.80 0 -0.2 0.4 0
228
LOW SATURATION VOLTAGE REGULATOR
ELM99333A
Parameter Output Voltage Output Current Load Stability Input/Output Voltage Differential Current Consumption Stand-by Current Consumption Input Stability Input Voltage Output Voltage Temp. Characteristics Short-circuit Current CEInput Voltage "H" CEInput Voltage "L" CEInput Current "H" CEInput Current "L" Symbol VOUT IOUT VOUT IOUT Vdif ISS Istandby VOUT VIN VIN VOUT Top Ilim VCEH VCEL ICEH ICEL Conditions
ELM99xxxA
(Top=25) Max. Units 3.366 V mA 15 210 45 0.5 0.30 8.0 mV mV A A %/V V ppm/ mA V V A A
Min. 3.234 170
Typ. 3.300 300 5 125 25 0.1 0.15
VIN=4.3V, IOUT=40mA VIN=4.3V, Lower by 0.1V than VOUT VIN=4.3V 1mAIOUT100mA IOUT=40mA Vin=4.3V VIN=4.3V, VCE=VSS 4.3VVIN8.0V IOUT=40mA VIN=4.3V, IOUT=40mA -30Top+80 VOUT=0V VIN=8.0V VIN=2.0V VCE=VIN VCE=VSS
100 70 1.80 0 -0.2 0.4 0 VIN 0.25 1.5
ELM99503A
Parameter Output Voltage Output Current Load Stability Input/Output Voltage Differential Current Consumption Stand-by Current Consumption Input Stability Input Voltage Output Voltage Temp. Characteristics Short-circuit Current CEInput Voltage "H" CEInput Voltage "L" CEInput Current "H" CEInput Current "L" Symbol VOUT IOUT VOUT IOUT Vdif ISS Istandby VOUT VIN VIN VOUT Top Ilim VCEH VCEL ICEH ICEL Conditions VIN=6.0V, IOUT=40mA VIN=6.0V, Lower by 0.1V than VOUT VIN=6.0V 1mAIOUT100mA IOUT=40mA VIN=6.0V VIN=6.0V, VCE=VSS 6.0VVIN8.0V IOUT=40mA VIN=6.0V, IOUT=40mA -30Top+80 VOUT=0V VIN=8.0V VIN=2.0V VCE=VIN VCE=VSS Min. 4.900 200 Typ. 5.000 330 5 105 30 0.1 0.15
(Top=25) Max. Units 5.100 V mA 15 170 55 0.5 0.30 8.0 mV mV A A %/V V ppm/ VIN 0.25 1.5 mA V V A A
100 70 1.80 0 -0.2 0.4 0
229
LOW SATURATION VOLTAGE REGULATOR
TYPICAL PERFORMANCE CHARACTERISTICS
ELM99xxxA
ELM99XX2A VCEH - Vin
2.0 2.0
ELM99XX2A VCEL - Vin
1.5 +25
Top=-30
1.5 +25
Top=-30
VCEH(V)
VCEL(V)
1.0
+80
1.0
+80
0.5
0.5
0.0
2
3
4
5
6
7
8
0.0
2
3
4
5
6
7
8
Vin(V)
Vin(V)
ELM99XX3A VCEH - Vin
2.0 2.0
ELM99XX3A VCEL - Vin
1.5
Top=-30 +25
1.5 +25
Top=-30
VCEH(V)
1.0
+80
VCEL(V)
1.0
+80
0.5
0.5
0.0
2
3
4
5
6
7
8
0.0
2
3
4
5
6
7
8
Vin(V)
Vin(V)
230
LOW SATURATION VOLTAGE REGULATOR
ELM99xxxA
ELM9927xA
Vout - Vin
Top=25 2.74 Iout=1mA 2.5 2.72 Iout=40mA
Vout - Vin
Top=25
Vout(V)
3.5
Vout(V)
2.70
40mA 100mA
2.0
2.68
2.66 2.5 3.0 3 4 5 6 7 8
Vin(V)
Vin(V)
Vout - Top
2.80 2.78 2.76 2.74 Iout=1mA 3.0 Vin=3.7V 3.2
Vout - Iout
Vin=3.7V
2.70 2.68 2.66 2.64 2.62 2.60 -20 0 20
100mA
Vout(V)
Vout(V)
2.72
2.8
Top=+80 -30
+25
2.6
2.4
40
60
80
2.2
0
50
100
150
200
250
300
Top()
Iout(mA)
Vdif - Iout
60 1.4
Ripple Rejection
Co=1.0F
Ripple Rejection(dB)
1.2 1.0
Top=+80 +25
50 40 30 20 10 01 10
Vdif(V)
0.8 0.6 0.4 0.2 0 100 200 300 -30
102
103
104
105
Iout(mA)
Frequency(Hz)
231
LOW SATURATION VOLTAGE REGULATOR
ELM99xxxA
Iss - Vin
50 Top=25 50
Iss - Top
Vin=3.7V
40
40
ISS(A)
20
Iss(A)
3 4 5 6 7 8
30
30
20
10
10
0
0
-20
0
20
40
60
80
Vin(V)
Top()
Input Transient Response
5.5 5.0 Input Voltage 4.5 4.0 3.5 3.0 2.5 2.0 Output Voltage 1.5 0 100 200
Co=1.0F
Input Transient Response
5.5 5.0 Input Voltage 4.5 4.0 3.5 3.0 2.5 2.0
Co=1.0F
Iout=40mA 300 400 1.5 0
Input,OutputVoltage (V)
Input,OutputVoltage (V)
Output Voltage 100 200
Iout=100mA 300 400
Time (s)
Time (s)
Load Transient Response
4.5 4.0 3.5 3.0 2.5 2.0 Output Current 40mA 1mA 0 200 400 600
Co=1.0F
Load Transient Response
4.5 4.0
Co=1.0F
Vin=3.7V
Vin=3.7V
Output Voltage (V)
Output Voltage (V)
Output Voltage
3.5 3.0 2.5 2.0 Output Current 100mA 40mA 100 Output Voltage
800
0
200
300
400
Time (s)
Time (s)
232
LOW SATURATION VOLTAGE REGULATOR
ELM99xxxA
ELM9930xA
Vout - Vin
Top=25 3.04 3.0 Iout=1mA 3.02 Iout=40mA
Vout - Vin
Top=25
Vout(V)
3.5 4.0
Vout(V)
3.00
2.5
40mA 100mA
2.98
2.96 2.0 2.5 3.0 3 4 5 6 7 8
Vin(V)
Vin(V)
Vout - Top
3.10 3.08 3.06 3.04 3.2 Iout=1mA Vin=4.0V 3.4
Vout - Iout
Vin=4.0V
Vout(V)
Vout(V)
3.02 3.00 2.98 2.96 2.94 2.92 2.90 -20 0
+25 Top=+80 3.0 -30 2.8
100mA
2.6 20 40 60 80 0 50 100 150 200 250 300
Top()
Iout(mA)
Vdif - Iout
60 1.4
Ripple Rejection
Co=1.0F
Ripple Rejection(dB)
1.2 1.0
50 40 30 20 10 01 10
Top=+80 +25
Vdif(V)
0.8 0.6 -30 0.4 0.2 0 100 200 300
102
103
104
105
Iout(mA)
Frequency(Hz)
233
LOW SATURATION VOLTAGE REGULATOR
ELM99xxxA
Iss - Vin
50 Top=25 50
Iss - Top
Vin=4.0V
40
40
ISS(A)
20
Iss(A)
4 5 6 7 8
30
30
20
10
10
0 3
0
-20
0
20
40
60
80
Vin(V)
Top()
Input Transient Response
6.0 Co=1.0F 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 Output Voltage 2.0 0 100 200 Iout=40mA 300 400 2.0 0 Input Voltage 5.5 5.0 4.5 4.0 3.5 3.0 2.5
Input Transient Response
Co=1.0F
Input,Output Voltage(V)
Input,Output Voltage(V)
Input Voltage
Output Voltage 100 200
Iout=100mA 300 400
Time(s)
Time(s)
Load Transient Response
4.5 4.0 Co=1.0F Vin=4.0V 4.0 Output Voltage 4.5
Load Transient Response
Co=1.0F Vin=4.0V
Output Voltage(V)
Output Voltage(V)
3.5 3.0 2.5 2.0
3.5 3.0 2.5 2.0
Output Voltage
Output Current 40mA 1mA 0 200 400 600 800
Output Current 100mA 40mA 100
0
200
300
400
Time(s)
Time(s)
234
LOW SATURATION VOLTAGE REGULATOR
ELM99xxxA
ELM9933xA
Vout - Vin
3.5 Iout=1mA 3.32 Iout=40mA Top=25 3.34
Vout - Vin
Top=25
Vout(V)
Vout(V)
4.0
3.0 40mA 100mA 2.5
3.30
3.28
3.26 3.0 3.5 3 4 5 6 7 8
Vin(V)
Vin(V)
Vout - Top
3.40 3.38 3.36 3.34 Iout=1mA 100mA 3.6 Vin=4.3V 3.8
Vout - Iout
Vin=4.3V
3.30 3.28 3.26 3.24 3.22 3.20 -20 0 20 40 60 80
Vout(V)
Vout(V)
3.32
3.4
Top=+80 -30
+25
3.2
3.0
2.8
0
50
100
150
200
250
300
Top()
Iout(mA)
Vdif - Iout
60 1.4
Ripple Rejection
Co=1.0F
Ripple Rejection(dB)
1.2 1.0
50 40 30 20 10 01 10
Top=+80 +25
Vdif(V)
0.8 0.6 -30 0.4 0.2 0 100 200 300
102
103
104
105
Iout(mA)
Frequency(Hz)
235
LOW SATURATION VOLTAGE REGULATOR
ELM99xxxA
Iss - Vin
50 Top=25 50
Iss - Top
Vin=4.3V
40
40
ISS(A)
20
Iss(A)
4 5 6 7 8
30
30
20
10
10
0
0
-20
0
20
40
60
80
Vin(V)
Top()
Input Transient Response
6.0 Co=1.0F 6.0 5.5 Input Voltage 5.0 4.5 4.0 3.5 3.0 Output Voltage 2.5 2.0 0 100 200 300 400 Iout=40mA
Input Transient Response
Co=1.0F 5.5 Input Voltage 5.0 4.5 4.0 3.5 3.0 Output Voltage 2.5 2.0 0 100 200 300 400 Iout=100mA
Input,Output Voltage(V)
Time(s)
Input,Output Voltage(V)
Time(s)
Load Transient Response
4.5 4.0 Output Voltage 3.5 3.0 2.5 2.0 Output Current 40mA 1mA 0 200 400 600 800 0 Co=1.0F Vin=4.3V 4.0 4.5
Load Transient Response
Co=1.0F Vin=4.3V
Output Voltage(V)
Output Voltage(V)
3.5 Output Voltage 3.0 2.5 2.0 Output Current 100mA 40mA 100
200
300
400
Time(s)
Time(s)
236
LOW SATURATION VOLTAGE REGULATOR
ELM99xxxA
ELM9950xA
Vout - Vin
Top=25 5.04 5.0 Iout=1mA 5.02
Vout - Vin
Top=25
Vout(V)
Vout(V)
Iout=40mA 5.00
4.5
40mA 100mA
4.98
4.96 4.0 4.5 5.0 5.5 6.0 5 6 7 8
Vin(V)
Vin(V)
Vout - Top
5.10 5.08 5.06 5.04 5.2 Vin=6.0V 5.4
Vout - Iout
Vin=6.0V
5.00 4.98 4.96 4.94 4.92 4.90 -20 0 20 40 60 80 100mA
Vout(V)
Vout(V)
5.02
Iout=1mA
+25 Top=+80 5.0 -30 4.8
4.6 0 50 100 150 200 250 300
Top()
Iout(mA)
Vdif - Iout
60 1.4
Ripple Rejection
Co=1.0F
Ripple Rejection(dB)
1.2 1.0 Top=+80 +25
50 40 30 20 10 01 10
Vdif(V)
0.8 0.6 0.4 0.2 0 100
-30
200
300
102
103
104
105
Iout(mA)
Frequency(Hz)
237
LOW SATURATION VOLTAGE REGULATOR
ELM99xxxA
Iss - Vin
50 Top=25 50
Iss - Top
Vin=6.0V
40
40
ISS(A)
20
Iss(A)
6 7 8
30
30
20
10
10
0 5
0
-20
0
20
40
60
80
Vin(V)
Top()
Input Transient Response
8.0 7.5 Input Voltage 7.0 6.5 6.0 5.5 5.0 4.5 Output Voltage 4.0 0 100 200
Co=1.0F
Input Transient Response
8.0 7.5 Input Voltage 7.0 6.5 6.0 5.5 5.0 4.5
Co=1.0F
Iout=40mA 300 400 4.0 0
Input,OutputVoltage (V)
Input,OutputVoltage (V)
Output Voltage 100 200
Iout=100mA 300 400
Time (s)
Time (s)
Load Transient Response
6.5 6.0 5.5 5.0 4.5 4.0 Output Current 40mA 1mA 200 Output Voltage
Co=1.0F
Load Transient Response
6.5 6.0
Co=1.0F
Vin=6.0V
Vin=6.0V
Output Voltage (V)
Output Voltage (V)
5.5 5.0 4.5 4.0
Output Voltage
Output Current 100mA 40mA 100
0
400
600
800
0
200
300
400
Time (s)
Time (s)
238


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