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APW7236

ANPEC
Part Number APW7236
Manufacturer ANPEC
Description Step-Up Converter
Published Jan 26, 2016
Detailed Description APW7236 1.5MHz Step-Up Converter for White LEDs Features General Description • Wide Input Voltage from 2.7V to 6V • ...
Datasheet PDF File APW7236 PDF File

APW7236
APW7236

Overview
APW7236 1.
5MHz Step-Up Converter for White LEDs Features General Description • Wide Input Voltage from 2.
7V to 6V • Fixed 1.
5MHz Switching Frequency • Reference Voltage : 0.
2V • PWM Brightness Control with Wide Frequency Range of 100Hz to 100kHz • Build-In Power MOSFET : 0.
2Ω • Open-LED Protection • Under-Voltage Lockout Protection • Over-Temperature Protection • <1µA Quiescent Current during Shutdown • TSOT-23-6A and TDFN2x2-8 Package • Halogen and Lead Free Available (RoHS Compliant) Applications The APW7236 is a current-mode and fixed frequency boost converter with an integrated N-FET to drive white LEDs.
The series connection allows the LED current to be identical for uniform brightness.
Its low on-resistance of NFET and low feedback voltage reduce power loss and achieve high efficiency.
Fast switching frequency(1.
5MHz typical) allows using small-size inductor and both of input and output capacitors.
An over voltage protection function, which monitors the output voltage via OVP pin, stops switching of the IC if the OVP voltage exceeds the over voltage threshold.
An internal soft-start circuit eliminates the inrush current during start-up.
The APW7236 also integrates under-voltage lockout, overtemperature protection, and current limit circuits to protect the IC in abnormal conditions.
The APW7236 is available in a TSOT-23-6A and TDFN2x2-8 package.
• White LED Display Backlighting • Cell Phone and Smart Phone • PDA, PMP, MP3 • Digital Camera Simplified Application Circuit Pin Configuration TSOT-23-6A Top View LX 1 GND 2 FB 3 6 VIN 5 OVP 4 EN VIN C1 4.
7µF OFF ON L1 4.
7µH VIN LX GND OVP EN FB ILED VOUT C2 µF 7~9 strings R1 TDFN2x2-8 (Top View) GND 1 VIN 2 OVP 3 EN 4 GND 8 LX 7 NC 6 FB 5 GND ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
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