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AP1609
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
Features
* * * * * * * * * * Input Voltage Range: 2.5~6V Output Voltage Range: 3.0~17V (2.5%) PWM/PFM Switching Control Oscillator Frequency: 300KHz (20%) High Efficiency: 91% (Typ.) Stand-by Current: ISTB 1 = A (Typ.) Built-in internal N-Channel MOS Lead Free Package: SOP-8L SOP-8L: Available in "Green" Molding Compound (No Br, Sb) Lead Free Finish/ RoHS Compliant (Note 1)
General Description
The AP1609 is a high efficient step-up DC/DC converter. Large output current is possible having a built in internal N channel MOSFET, and using an external coil and diode. Output voltage is programmable with 1.23V of standard voltage supply internal, and using externally connected components, output voltage (FB) can be set up at will. With a 300KHz switching frequency, the size of the external components can be reduced. Control switches from PFM to PWM during light loads with the AP1609 (PWM/PFM switchable) and the series are highly efficient from light loads to large output currents. During stand-by time (CE pin "Low"), current consumption is reduced to 1A.
Applications
* * * * * Electronic Information Organizers Palmtops Cellular and Portable Phones Portable Audio Systems Various Multi-Function Power Supplies
Ordering Information
AP 1609 S X - 13
Package S : SOP-8L Lead Free L : Lead Free G : Green
Packaging (Note 2) SOP-8L SOP-8L
Packing
13 : Tape & Reel
Device
Lead-free
AP1609SL-13 AP1609SG-13
Notes:
Package Code S S
13" Tape and Reel Quantity Part Number Suffix 2500/Tape & Reel -13 2500/Tape & Reel -13
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.
AP1609 Rev. 2
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AP1609
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
Pin Assignments
( Top View )
CE Vcc FB 1 2 3 8 7 6 5 GND GND LX LX
PGND 4
SOP-8L
Pin Descriptions
Pin Name CE Vcc FB PGND LX GND Pin Number 1 2 3 4 5, 6 7, 8 Description Chip Enable: H: Enable L: Disable IC signal power supply pin Feedback pin Power MOSFET GND Switch Pin. Connect external inductor/diode here. Minimize trace area at this pin to reduce EMI. GND Pin
AP1609 Rev. 2
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AP1609
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
Block Diagram
Vcc
FB
Phase Compensation
LX
+ -
+ PWM Comparator Ramp Wave Generator, OSC
Buffer, Driver
CE
Vref with CE
PWM/PFM Controller
GND
PGND
Absolute Maximum Ratings
Symbol VCC VFB VCE VSW ILX PD TOPR TSTG Parameter VIN Pin Voltage FB Pin Voltage CE Pin Voltage Switch Voltage (LX to GND) Switch Current Continuous Total Power Dissipation Operating Ambient Temperature Storage Temperature Ratings -0.3 ~ 7 -0.3 ~ VCC +0.3 -0.3 ~ VCC +0.3 -0.3 ~ 18 -3 ~ 0.2 1200 -20 ~ +80 -20 ~ +125 Units V V V V A mW
o o
C C
AP1609 Rev. 2
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AP1609
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
Electrical Characteristics
AP1609 Symbol VFB VCC VOUT IOUT RDS (ON) ICCQ ISD Fosc MAXDTY PFMDTY VCEH VCEL EFFI ( FOSC = 300kHz, VOUT = 5V ) Parameter Conditions FB Voltage Input Voltage Output Voltage Maximum Switching Output Current Drain-Source On-State Resistance Quiescent Current Shutdown Current Oscillator Frequency Maximum Duty Ratio PFM Duty Ratio CE "High" Voltage CE "Low" Voltage Efficiency TA = 25 oC Max Units 1.26 6 17 130 360 35 0.20 V V V A m A A kHz % % *VCC *VCC %
Min 1.20 2.5 3.0 2.4
Typ. 1.23 100 80 1 300 25 91
ID = 2.4A No Load, FB = 2V, CE = High No Load, CE = Low Measuring of EXT Waveform, VIN = Output Voltage +0.3V No Load No External Components, VFB = 0V, Apply 0.65VCC (min.) to CE, Chip Enable Same as VCEH, Chip Disable
240 80 15 0.65 -
AP1609 Rev. 2
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AP1609
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
Typical Application Circuit
(1) Normal Circuit
2.5V~6V 100 VCC 330K 100u 0.1u 3.3u 0.1u CE GND FB PGND R2 LX R1 CBP Option 0.1u 100u 10uH SS340 Vout
Vout = 1.23x (1+
R1 R2
) , R2= 10K~100K
(2) HV Circuit
above 5.5V R VCC 330K 470u 0.1u ZD 5V 3.3u 0.1u CE GND FB PGND R2 LX R1 CBP Option 0.1u 470u 10uH SS340 15V
Vout = 1.23x (1+
R1 R2
) , R2 = 10K~100K
AP1609 Rev. 2
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AP1609
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
Typical Performance Characteristics
Vcc vs. Supply Current
210 180 VCE =Vcc
400 350 Frequency (KHz) 300 250 200 150 100 3 3.5
Vcc vs. Frequency
Load = 300mA
Supply Current (uA)
150 120 90 60 30 0 3 3.5 4 4.5 5 5.5 6
4
Vcc (V)
4.5 5 Vcc (V)
5.5
6
1 0.8
Line Regulation
2 1.5
Load Regulation
Line Regulation (%)
Load Regulation (%)
0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 3 3.5 4 4.5 Load = 50mA 5 5.5 6
1 0.5 0 -0.5 -1 -1.5 -2 0 200 400 600 800 1000 Vcc = 5V
Vcc (V)
Load (mA)
100 95 90 85
Load vs. Efficiency
100 95 90 85 80 75 70 65 60 0 0.2 0.4 0.6 0.8 1 1.2 1.4 0 0.2
Load vs. Efficiency
Efficiency
80 75 70 65 60 Vcc = 3.3V,Vout = 5V
Efficiency
Vcc = 5V,Vout = 12V
0.4
0.6
Load (A)
Load (A)
0.8
1
1.2
1.4
AP1609 Rev. 2
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AP1609
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
Typical Performance Characteristics
Temperature vs. Frequency
(Continued)
400 350
300 250 200 150 100 -50 -25 0 25 Load = 300mA Vcc = 5V 50 75 100
200 180 160 140 120 100 80 60 40 20 0
Temperature vs. Supply Current
Frequency (KHz)
Supply Current (uA)
Vcc = 5V -50 -25 0 25 50
o
Temperature ( C)
o
75
100
Temperature ( C)
5 4 3 2 1 0 -1 -2 -3 -4 -5 -50
Temperature vs. Vout
Vout / Vout (%)
Vcc = 5V Load = 100mA
-25
0
25
Temperature ( C)
o
50
75
100
AP1609 Rev. 2
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AP1609
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
Marking Information
(1) SOP-8L
( Top View )
8 5
Logo Part Number AP1609 YY WW X X
1 4
L : Lead Free G : Green YY : Year : 08, 09,10~ WW : Week : 01~52; 52 represents 52 and 53 week X : Internal Code
Package Information
(1) Package Type: SOP-8L
(All Dimensions in mm)
3.85/3.95
5.90/6.10
0.10/0.20
0.254 0.62/0.82
Gauge Plane Seating Plane
Detail "A"
7~9 1.30/1.50 1.75max. 0.15/0.25
0.35max. 45
7~9
Detail "A"
0/8
1.27typ 4.85/4.95
0.3/0.5
8x-0.60 5.4 6x-1.27 8x-1.55
Land Pattern Recommendation (Unit: mm)
AP1609 Rev. 2
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AP1609
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated.
AP1609 Rev. 2
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