TPS92200D2DDCR

Part: TPS92200D2DDCR — Texas Instruments

Type: Synchronous Buck LED Driver

Description: 4–30 V input, 1.5 A continuous output synchronous buck LED driver with integrated 150 mΩ/90 mΩ MOSFETs, 1 MHz switching frequency, and 99 mV ±3 mV feedback reference. The D2 variant provides analog dimming via a PWM digital input.

Operating Conditions:

• Supply voltage: 4–30 V
• Operating temperature: -40 to 125 °C (junction)
• Switching frequency: 1 MHz typical (0.8–1.2 MHz)
• Maximum duty cycle: 99% typical

Absolute Maximum Ratings:

• Max supply voltage (VIN): 32 V
• Max SW voltage: 32 V
• Max junction temperature: 150 °C
• Storage temperature: -65 to 150 °C

Key Specs:

• FB reference voltage: 96/99/102 mV (min/typ/max), VDIM = 3.3 V
• VIN UVLO: 3.7 V typical rising (3.5–3.9 V), 3.5 V typical falling
• Shutdown current: 1 μA typical, 3 μA max (VIN = 12 V, VDIM = 0 V)
• Normal operating current: 0.5 mA typical, 1 mA max (VDIM = 3.3 V)
• High-side FET RDS(on): 150 mΩ typical; low-side FET RDS(on): 90 mΩ typical (VIN ≥ 5 V)
• High-side current limit: 2.9/3.3/4 A (min/typ/max)
• Minimum on-time: 75 ns typical (100 ns max); minimum off-time: 65 ns typical (90 ns max)
• Thermal shutdown: 165 °C typical, 15 °C hysteresis
• Internal soft-start: 0.5 ms typical
• D2 analog dimming: FB reference down to 1 mV at DIM duty cycle ≤ 3%

Features:

• Peak current mode control with internal compensation
• TPS92200D2: analog dimming with digital (PWM duty) input, 1% to 100% range
• Ultra-low output discharge current from load: 1 μA typical
• LED open-load protection
• LED+ short-to-GND protection with auto-retry
• LED+ and LED- short circuit protection with auto-retry
• Sense-resistor open-load and short-to-GND protection with auto-retry
• Thermal shutdown protection with auto-retry
• Hiccup mode on current limit or FB overvoltage

Applications:

• Video surveillance IR/white LED driver
• Facial recognition IR LED driver
• Stage lighting LED driver
• General industrial and commercial illumination
• Medical UV LED driver
• AA or Li-Ion battery charger

Package:

• SOT-23-THIN (6) DDC, 1.60 mm × 2.90 mm (TPS92200D2DDCR)
• VQFN-HR (6) RXL, 1.50 mm × 2.00 mm (other orderable variants)

• 4-V to 30-V wide input range
• Integrated 150-mΩ and 90-mΩ MOSFETs for 1.5-A continuous output current
• Ultra-low shut-down current: 1 μA
• Ultra-low output discharge current from load: 1 μA
• 1-MHz switching frequency
• Maximum duty cycle up to 99%
• Peak current mode with internal compensation
• Flexible dimming options:
• -TPS92200D1: PWM dimming with digital input and analog dimming with analog input
• -TPS92200D2: analog dimming with digital input
• Ultra-low and accurate FB voltage: 99 mV ±3 mV
• Full protection features:
• -LED open-load protection
• -LED+ short-to-GND protection with auto-retry
• -LED+ and LED- short circuitry protection with auto-retry
• -Sense-resistor open-load and short-to-GND protection with auto-retry
• -Thermal shutdown protection with auto-retry
• SOT23 (6) package
• VQFN-HR (6) package

• Video surveillance IR/White LED driver
• Facial recognition IR LED driver
• Stage lighting LED driver
• General industrial and commercial illumination
• Medical UV LED driver
• AA or Li-Ion battery charger

Figure 5-1. DDC Package 6-Pin SOT-23-THIN Top View

Figure 5-2. RXL Package 6-Pin VQFN-HR Top View

Table 5-1. Pin Functions

• (1) I = Input, O = Output, P = Supply, G = Ground

The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product containing it. T J = -40°C to +125°C, VIN = 4 V to 30 V, (unless otherwise noted).

over operating ambient temperature range (unless otherwise noted) (1)

over operating ambient temperature range (unless otherwise noted)

The TPS92200 device is typically used as a buck converter to drive one or more LEDs from a 4-V to 30-V input.