BQ24232HRGTR

Part: bq24232H (bq24232HRGTR / bq24232HRGTT) — Texas Instruments, bq2423xx family

Type: USB-Powered Li-Ion Linear Battery Charger with Power Path Management

Description: 28 V-rated input, linear Li-Ion charger with dynamic power path management, supporting 25–500 mA charge current, programmable input current limit up to 500 mA, and a 10.5 V input OVP threshold (bq24232H).

Operating Conditions:

• IN voltage range: 4.35–26 V; IN operating range 4.35–10.2 V for '232H (4.35–6.4 V for '230H)
• Operating junction temperature: -40 to 125 °C
• Input current: up to 500 mA; charge current (BAT, charging): up to 500 mA
• OUT/BAT discharge current: up to 1500 mA

Absolute Maximum Ratings:

• Max input voltage: IN 28 V; OUT 7 V; BAT 5 V; other pins 7 V (with respect to VSS)
• Max input current (IN): 600 mA
• Max continuous output current: OUT 1700 mA; BAT (discharge) 1700 mA
• Max junction temperature: 150 °C
• Storage temperature: -65 to 150 °C

Key Specs:

• UVLO: 3.2–3.4 V (3.3 V typ), hysteresis 200–300 mV
• OVP threshold ('232H): 10.2–10.8 V (10.5 V typ); '230H: 6.4–6.8 V (6.6 V typ)
• OUT regulation voltage V O(REG): 4.4–4.6 V (4.5 V typ)
• Max input current: 90–100 mA (EN1=LO, EN2=LO); 450–500 mA (EN1=HI, EN2=LO)
• Programmable input current limit: 200–500 mA with R ILIM = 3.1–7.8 kΩ
• Dropout V IN–V OUT: 150 mV typ, 237.5 mV max (V IN = 4.45 V, I IN = 500 mA)
• Dropout V BAT–V OUT: 62.5 mV max (I OUT = 500 mA, V IN = 0 V)
• Sleep current into BAT: 6.5 μA max (T J = 85 °C); active supply current: 1.5 mA max
• Thermal resistance θ JA: 44.5 °C/W

Features:

• Compliant with USB charger specifications; input current selectable at 100 mA or 500 mA
• Input-based dynamic power management (VIN-DPM)
• 28 V-rated input with overvoltage protection
• 4.35 V battery regulation
• Dynamic power path management (DPPM)
• Output current monitoring (ISET) for charge currents up to 500 mA
• Programmable termination current (bq24232H)
• Programmable precharge and fast-charge safety timers
• Reverse current, short-circuit, and thermal protection
• NTC thermistor input
• Start-up sequence limiting inrush current
• Charging/charge-complete and power-good status outputs

Applications:

• Bluetooth devices
• Low-power handheld devices

Package:

• VQFN-16 (RGT), 3.00 mm × 3.00 mm

• 1 · Fully Compliant with USB Charger Specifications
• • Maximum input current selectable at 100 mA and 500 mA
• • 100 mA maximum current limit ensures charging complies with USB-IF specifications
• • Input-based dynamic power management (VIN - DPM) prevents use of poor-quality USB power sources
• 28 V rated input voltage with overvoltage protection
• 4.35 V battery regulation
• Integrated dynamic power path management (DPPM) allows charging the battery independently while powering the system
• Output current monitoring (ISET) function supports charge currents up to 500 mA
• Programmable input current limit of up to 500 mA for wall adapters
• Programmable termination current (bq24232H)
• Programmable precharge and fast charge safety timers
• Reverse current, short-circuit, and thermal protection
• Negative temperature coefficient (NTC) thermistor input
• Proprietary start-up sequence limits inrush current
• Status indication – charging / charge complete, power good
• Small 3 mm × 3 mm 16-pin quad flat no-lead (QFN) package

RGT Package 16 Pins Top View

Pin Functions

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

over the 0°C to 125°C operating free-air temperature range (unless otherwise noted)