AP1602AYL-7

AP1602AYL-7 Datasheet

AP1602

Part	Datasheet
AP1602AYL-7	AP1602AYL-7 (pdf)

Related Parts	Information
AP1602BYL-7	AP1602BYL-7

PDF Datasheet Preview
Not Recommended for New Design Step-Up DC/DC Converter AP1602 - Features -A Guaranteed Start-Up from less than V. -High Efficiency. -Low Quiescent Current. -Less Number of External Components needed. -Low Ripple and Low Noise. -Space Saving Packages SOT89-5 - Applications -Pagers. -Cameras. -Wireless Microphones. -Pocket Organizers. -Battery Backup Suppliers. -Portable Instruments. - Pin Assignments REF 1 5 OUT GND 2 AP1602A SHDN 3 74 LX GND 2 AP1602B REF 3 74 OUT SOT89-5L - General Description The AP1602 is a high efficiency step-up DC/DC converter for applications using 1 to 2 NiMH battery cells. Only three external components are required to deliver a fixed output voltage of 3.3V. The AP1602 starts up from less than 0.9V input with 1mA load. Pulse Frequency Modulation scheme brings optimized performance for applications with light output loading and low input voltages. The output ripple and noise are lower compared with the circuits operating in PSM mode. The PFM control circuit operating in 100KHz max. switching rate results in smaller passive components. The space saving SOT89-5 packages make the AP1602 an ideal choice of DC/DC converter for space conscious applications, like pagers, electronic cameras, and wireless microphones. - Pin Descriptions Pin Name REF OUT LX GND SHDN Pin No. AB 13 54 45 22 1.2V Reference Voltage. Bypass with a 0.1µF capacitor. Power Output. OUT provides bootstrap power to the IC. N-Channel and P-Channel Power MOSFET Drain Ground Shutdown Input. Drive high >80% of VOUT for operating mode. Drive low <20% of VOUT for shutdown mode. Connect to OUT for normal operation. Feedback pin - Ordering Information AP1602 X Version A version B version Package Y SOT89-5L Lead Free Packing Blank Normal Blank Tube L Lead Free Package A Taping This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Not Recommended for New Design Step-Up DC/DC Converter - Block Diagram AP1602 SHDN Minimum Off-Time One-Shot Q TRIG One-Shot Maximum On-Time One-Shot F/F R TRIG Q One-Shot Error Amplifier Current-Limit Amplifier Zero Crossing EN Amplifier OUT 0.1uF P LX 22uH N GND 47uF VIN 47uF 0.1uF - Absolute Maximum Ratings Parameter Rating Unit VCC Supply Voltage OUT to GND VREF REF to GND to VOUT+0.3 VSW Switch Voltage LX to GND to VOUT+0.3 IOUT Output Current OUT ISW Switch Current LX

PDF Datasheet Preview

Not Recommended for New Design

Step-Up DC/DC Converter

AP1602
- Features
-A Guaranteed Start-Up from less than V. -High Efficiency. -Low Quiescent Current. -Less Number of External Components needed. -Low Ripple and Low Noise. -Space Saving Packages SOT89-5
- Applications
-Pagers. -Cameras. -Wireless Microphones. -Pocket Organizers. -Battery Backup Suppliers. -Portable Instruments.
- Pin Assignments

REF 1
5 OUT

GND 2 AP1602A

SHDN 3
74 LX

GND 2 AP1602B

REF 3
74 OUT

SOT89-5L
- General Description

The AP1602 is a high efficiency step-up DC/DC converter for applications using 1 to 2 NiMH battery cells. Only three external components are required to deliver a fixed output voltage of 3.3V. The AP1602 starts up from less than 0.9V input with 1mA load. Pulse Frequency Modulation scheme brings optimized performance for applications with light output loading and low input voltages. The output ripple and noise are lower compared with the circuits operating in PSM mode. The PFM control circuit operating in 100KHz max. switching rate results in smaller passive components. The space saving SOT89-5 packages make the AP1602 an ideal choice of DC/DC converter for space conscious applications, like pagers, electronic cameras, and wireless microphones.
- Pin Descriptions

Pin Name REF OUT

LX GND

SHDN

Pin No. AB 13 54 45 22
1.2V Reference Voltage. Bypass with a 0.1µF capacitor. Power Output. OUT provides bootstrap power to the IC. N-Channel and P-Channel Power MOSFET Drain Ground Shutdown Input. Drive high >80% of VOUT for operating mode. Drive low <20% of VOUT for shutdown mode. Connect to OUT for normal operation. Feedback pin
- Ordering Information

AP1602 X

Version

A version B version

Package Y SOT89-5L

Lead Free

Packing

Blank Normal

Blank Tube

L Lead Free Package A Taping

This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.

Not Recommended for New Design

Step-Up DC/DC Converter - Block Diagram

AP1602

SHDN

Minimum Off-Time One-Shot

Q TRIG One-Shot

Maximum On-Time One-Shot

F/F R

TRIG Q One-Shot

Error Amplifier

Current-Limit Amplifier

Zero

Crossing EN Amplifier

OUT 0.1uF

P LX 22uH

N GND
47uF

VIN 47uF
0.1uF
- Absolute Maximum Ratings

Parameter

Rating

Unit

VCC Supply Voltage OUT to GND

VREF REF to GND
to VOUT+0.3

VSW Switch Voltage LX to GND
to VOUT+0.3

IOUT Output Current OUT

ISW Switch Current LX

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Datasheet ID: AP1602AYL-7 509813