TPS610997

Part: TPS61099x (TPS61099, TPS610991–TPS610997) — Texas Instruments

Type: Synchronous Boost Converter

Description: 0.7–5.5 V input synchronous boost converter with 600 nA (VOUT pin) and 400 nA (VIN pin) quiescent current, 1.8–5.5 V adjustable or fixed output, minimum 0.8 A switch current limit, and up to 93% efficiency from 10 mA to 300 mA load.

Operating Conditions:

• Supply voltage (VIN): 0.7–5.5 V
• Output voltage range: 1.8–5.5 V
• Operating junction temperature: -40 to 125 °C
• Recommended inductor: 0.7–2.86 µH (2.2 µH nominal); output capacitor 10–100 µF

Absolute Maximum Ratings:

• Voltage at VIN, SW, VOUT, FB, EN: -0.3 to 6.0 V
• Operating junction temperature: -40 to 150 °C
• Storage temperature: -65 to 150 °C
• ESD: ±2000 V HBM, ±500 V CDM

Key Specs:

• Quiescent current into VIN: 0.4 µA typ, 1.1 µA max (enabled, no load, TJ = -40 to 85 °C)
• Quiescent current into VOUT: 0.6 µA typ, 1.5 µA max (enabled, no load, no switching, TJ = -40 to 85 °C)
• Shutdown current into VIN: 0.5 µA typ, 1.6 µA max (VIN = 3.7 V, VOUT = 0 V, TJ = -40 to 85 °C)
• Feedback reference voltage (adjustable version, PWM mode): 0.98/1.00/1.02 V (min/typ/max)
• Switch current limit (VOUT ≥ 2.5 V, boost): 0.8 A min, 1 A typ, 1.25 A max
• Low-side switch RDS(on): 250 mΩ typ at VOUT = 5.0 V
• Rectifier RDS(on) at VOUT = 5.0 V: 300 mΩ typ, 350 mΩ max
• Output overvoltage protection threshold: 5.6/5.8/6.0 V (min/typ/max, VOUT rising)
• UVLO (VIN rising): 0.6 V typ, 0.7 V max; hysteresis 200 mV typ
• Overtemperature protection: 150 °C typ, 25 °C hysteresis

Features:

• Hysteretic current-mode control with burst mode for light-load efficiency
• Down mode (regulated output when VIN > VOUT) and Pass-Through mode (entered when VIN > VOUT + 0.5 V)
• True disconnection of load from input during shutdown
• Up to 75% efficiency at 10 µA load (fixed output versions)
• Adjustable output version and fixed versions: 1.8, 2.5, 3.0, 3.3, 3.6, 4.5 and 5.0 V
• Soft start with limited inrush current
• Supports up to 300 mA output current for 3.3 V to 5 V conversion
• WEBENCH Power Designer support

Applications:

• Memory LCD bias
• Optical heart rate monitor LED bias
• Wearable applications
• Low-power wireless applications
• Portable products
• Battery powered systems

Package:

• YFF: 6-ball DSBGA (WCSP), 1.23 mm × 0.88 mm
• DRV: 6-pin WSON, 2 mm × 2 mm

• 600nA ultra-low I Q into VOUT pin
• 400nA ultra-low I Q into V IN pin
• Operating input voltage from 0.7V to 5.5V
• Adjustable output voltage from 1.8V to 5.5V
• Fixed output voltage versions available
• Minimum 0.8A switch peak current limit
• Regulated output voltage in down mode
• True disconnection during shutdown
• Up to 75% efficiency at 10μA load with fixed output voltage versions
• Up to 93% efficiency from 10mA to 300mA load
• 6-ball 1.23mm × 0.88mm WCSP package and 2mm × 2mm WSON package
• Create a custom design using the TPS61099x with the WEBENCH ® Power Designer

• Memory LCD bias
• Optical heart rate monitor LED bias
• Wearable applications
• Low-power wireless applications
• Portable products
• Battery powered systems

Figure 5-1. YFF Package, 6-Pin DSBGA (Top View)

Figure 5-2. DRV Package, 6-Pin WSON (Top View)

Table 5-1. Pin Functions

• (1) I = input, PWR = power

TJ = -40°C to 125°C and VIN = 0.7V to 5.5V. Typical values are at VIN = 3.7V, T J = 25°C, unless otherwise noted.

over operating free-air temperature range (unless otherwise noted) (1)

The TPS61099x is a synchronous boost converter designed to operate at a wide input voltage from 0.7V to 5.5V with 1A peak switch current limit. The device adopts a hysteretic control scheme so the operating frequency is not a constant value, which varies with different input and output voltages and inductor values. The device only consumes 1μA quiescent current under light load condition. The device also supports true shutdown to disconnect the load from the input to minimize the leakage current. Therefore,the device is an excellent choice for alkaline battery, coin-cell battery, Li-ion or Li-polymer battery powered systems to extend the battery running time.

• (1) For more information, see Section 11.
• (2) The package size (length × width) is a nominal value and includes pins, where applicable.

Copyright © 2016, Texas Instruments Incorporated

Typical Application Circuit