0
ACTIVE
Number of channels |
3 |
Vin (min) (V) |
2.7 |
Vin (max) (V) |
5.5 |
Vout (min) (V) |
0 |
Vout (max) (V) |
40 |
Type |
Inductive |
Switching frequency (max) (kHz) |
1100 |
Duty cycle (max) (%) |
94 |
LED current per channel (mA) |
30 |
Peak efficiency (%) |
91 |
Topology |
Boost |
Features |
I2C control, OVP, PWM control |
Operating temperature range (°C) |
-40 to 125 |
Rating |
Catalog |
DSBGA (YFQ)-12-2.52000000000000018 mm² 1.8 x 1.4000000000000001
The LM3697 11-bit LED driver provides high-performance backlight dimming for 1, 2, or 3 series LED strings while delivering up to 90% efficiency. The boost converter with integrated 1-A, 40-V MOSFET automatically adjusts to LED forward voltage to minimize headroom voltage and effectively improve LED efficiency.
The LM3697 is a high-efficiency three-string power source for backlight or keypad LEDs in smart-phone handsets. The high-voltage inductive boost converter provides the power for three-series LED strings for display backlight and keypad functions (HVLED1, HVLED2, and HVLED3).
An additional feature is a pulse width modulation (PWM) control input for content adjustable backlight control, which can be used to control any high-voltage current sink.
The LM3697 is fully configurable via an I2C-compatible interface. 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
