中文
EnglishThe APW7236 is a current-mode and fixed frequency boost converter with an integrated N-FET to drive white LEDs.
Features
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)
General Description
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 iden-
tical 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, over-
temperature protection, and current limit circuits to pro-
tect the IC in abnormal conditions. The APW7236 is avail-
itch Current Limit (A) | Current Sense Voltage (typ)(V) | Switching Frequency (kHz) | Load Disconnect During Shutdown | Dimming Control | |||||||||||
min | max | min | max | ||||||||||||
APW7136 | SOT-23-6 | Boost | CM | 2.7 | 6 | 32 | 8 | 0.03 | 0.9 | 0.25 | 1000 | No | Analog | ||
APW7071 | SOT-23-6 | Boost | VM Hysteresis | 2.5 | 6 | 19 | 4 | 0.03 | 0.4 | 0.25 | 1000 | No | Analog | ||
APW7128 | DFN3x3-10 | Boost | CM | 2.7 | 21 | 30 | 8 | 0.6 | 3.5 | 0.5 | 1200 | No | Analog | ||
APW7000 | QFN4x4-16 | Charge Pump | - | 2.8 | 4.5 | - | 4 | 0.03 | - | - | 1000 | - | Analog | ||
APW7001 | QFN4x4-16 | Charge Pump | - | 2.8 | 4.5 | - | 6 | 0.03 | - | - | 1000 | - | Analog | ||
APW7008 | QFN3x3-16 | Charge Pump | - | 2.8 | 4.5 | - | 4 | 0.03 | - | - | 1000 | - | Analog | ||
APW7208 | SOT-23-6 | Boost | CM | 2.5 | 6 | 24 | 6 | 0.03 | 1.2 | 0.1 | 1000 | No | Analog | ||
APW7209 | SOT-23-6 | Boost | CM | 2.5 | 6 | 39 | 10 | 0.03 | 0.9 | 0.3 | 1000 | No | Analog | ||
APW7207 | SOT-23-6 | Boost | CM | 2.5 | 6 | 24 | 6 | 0.03 | 1.2 | 0.2 | 1000 | No | Analog | ||
APW7215 | TDFN2x2-6 | Boost | CM | 2.5 | 6 | 40 | 10 | 0.03 | 1.5 | 0.2 | 600 | No | Analog | ||
APW7236 | SOT-23-6 | Boost | CM | 2.5 | 6 | 24 | 6 | 0.03 | 2 | 0.2 | 1500 | No | Analog |
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