1 Features
• 2.5V to 5.5V input voltage
• Integrated 280mΩ/600mΩ LS/HS switch FETs
• Up to 95% efficiency
• 130nA ultra-low shutdown current
• High-accuracy PWM controlled analog dimming
down to 0.1% dimming ratio
• Drives LED string up to
– 24.5V for TPS923610
– 30V for TPS923611 and TPS923612
• Switch current limit
– 1.8A for TPS923610 and TPS923611
– 2.25A for TPS923612
• FCCM with 1.1MHz/400KHz switching frequency
options
• 200mV feedback voltage
• Internal compensation
• Protection Features
– Over-voltage protection
– Over-current protection
– Under-voltage lockout protection
– Thermal shutdown

2 Applications
• LCD back lighting
– Smartphone
– Thermostat
– HMI panel
– GPS personal navigation device
– Dashboard camera
• General illumination
– IP network camera
– Video doorbell
– Vacuum robot

3 Description
The TPS923610/1/2 is a synchronous boost LED
driver that integrates both low-side and high-side
switch FETs. It features an ultra-low 130nA shutdown
current. The TPS923610/1/2 can drive single or
parallel LED strings for LCD back lighting and general
illumination.
The feedback voltage is regulated to 200mV and
the output current is set by an external sensor
resistor, RSET, as shown in the Simplified Schematic.
During operation, a PWM signal applied to ADIM
pin adjusts the feedback voltage proportionally to the
PWM duty cycle, enabling precise analog dimming.
The TPS923610/1/2 supports PWM controlled analog
dimming with ratio as low as 0.1%, along with FCCM
operation, avoiding audible noises at the output since
current modulation remains purely analog.
The TPS923610/1/2 integrates over-voltage
protection that disables the power stage to prevent
the output voltage from exceeding the absolute
maximum voltage rating during LED open conditions.
The TPS923610/1/2 also provides over-current
protection, under-voltage lockout protection and
thermal shutdown protection.