0
ACTIVE
Number of channels |
3 |
Vin (min) (V) |
2.7 |
Vin (max) (V) |
5.5 |
Vout (min) (V) |
0 |
Vout (max) (V) |
24 |
Type |
Inductive |
Switching frequency (max) (kHz) |
1120 |
Duty cycle (max) (%) |
94 |
LED current per channel (mA) |
20.2 |
Peak efficiency (%) |
90 |
Topology |
Boost |
Features |
CABC, Direct PWM Dimming, Enable/Shutdown, Integrated Switch, OVP, PWM control, Synchronous Rectification, Thermal shutdown |
Operating temperature range (°C) |
-40 to 125 |
Rating |
Catalog |
DSBGA (YFQ)-12-2.52000000000000018 mm² 1.8 x 1.4000000000000001
The LM3699 is a three-string, high-efficiency, PWM-controlled power source for display backlight or keypad LEDs in smartphone handsets. The high-voltage inductive boost converter with integrated 1-A, 40-V MOSFET provides the power for three series LED strings. The boost output automatically adjusts to LED forward voltage to minimize headroom voltage and effectively improve LED efficiency.
The ILOW terminal provides a method to quickly reduce LED brightness during camera flash operation.
The LM3699 has integrated overvoltage, overcurrent, and thermal protection.
The device operates over a 2.7-V to 5.5-V input voltage range and a −40°C to 85°C temperature range.
WELL LINK CHIPS GROUP CO.,LIMITED FLAT/RM 1802 BEVERLY HOUSE 93-107 LOCKHART ROAD WANCHAI HK
