MP2639B

Part: MP2639BGR-Z — Monolithic Power Systems (MPS)

Type: 1S Li-ion/Li-polymer Switching Battery Charger with Integrated Boost (OTG) Discharge Mode

Description: 1S Li-ion/Li-polymer switching charger with a 4.5–16 V input range, up to 5 A programmable charge current, 4.35 V ±0.5% charge voltage, and a programmable boost output of up to 16 V at up to 3 A.

Operating Conditions:

• Input voltage (IN to PGND): 4 V to 16 V
• Battery voltage (BATT to PGND): 3 V to 4.5 V
• Operating junction temperature: -40 to +125 °C
• Switching frequency: 1150–1450 kHz (1300 kHz typ)

Absolute Maximum Ratings:

• IN: -0.3 V to +20 V
• SW: -0.3 V (-2 V for 50 ns) to +20 V
• BATT: -0.3 V to +5.5 V
• BST to SW and all other pins to AGND: -0.3 V to +5.5 V
• Continuous power dissipation (TA = +25 °C): 2.97 W
• Max junction temperature: 150 °C
• Storage temperature: -65 °C to +150 °C
• Lead temperature (solder): 260 °C

Key Specs:

• Termination charge voltage: 4.33 / 4.35 / 4.37 V (min/typ/max)
• Constant charge current: 4.35 A typ with RISET = 47.5 kΩ (4.1–4.6 A); 1.04 A typ with RISET = 215 kΩ
• Pre-charge current: 12.5% of ICC (240 mA typ if ICC < 1.7 A); pre-charge threshold 3.0 V typ
• Termination current: 10% of ICC typ (5–17.5%)
• Input current limit: 2856 mA typ with RILIM = 73.2 kΩ (2680–3000 mA)
• Discharge output current limit: 3.12 A typ with ROLIM = 68.1 kΩ (3–3.3 A)
• FET on-resistance (TA = 25 °C): Q1 17 mΩ typ (35 mΩ max); Q2 25 mΩ typ (35 mΩ max); reverse blocking FET 12 mΩ typ (15 mΩ max)
• Peak current limit: high-side 8 A typ in CC mode; low-side 9.2 A typ in discharge mode
• Input UVLO 3.8 V falling; input OVLO 19.5 V rising; battery OVP 4.60 V
• Battery shutdown current: 20 μA max (MODE high, switching disabled)
• Thermal regulation 134 °C; thermal shutdown 155 °C (guaranteed by design)
• Feedback reference: 1.2 V (1.18–1.22 V)

Features:

• Input-current-based and input-voltage-based power management
• Programmable boost output voltage up to 16 V and current up to 3 A
• NTC pin for battery temperature monitoring (JEITA thresholds)
• Discharge mode load trace compensation
• Programmable timer back-up protection
• Thermal regulation and thermal shutdown
• Short-circuit protection in boost mode
• Internal battery reverse leakage blocking
• 4-LED battery level and status indication
• Pre-charge, constant current, and constant voltage charging with termination and auto-recharge (4.14 V)

Applications:

• Power station applications
• Mobile internet devices
• USB PD power banks

Package:

• QFN-26 (4 mm x 4 mm); θJA 42 °C/W, θJC 9 °C/W

• 4.5V to 16V Input Voltage Range
• Up to 5A Programmable Charge Current
• Integrated Both Input-Current-Based and Input-Voltage-Based Power Management Functions
• 4.35V Charge Voltage with 0.5% Accuracy
• Up to 16V Programmable Boost Output Voltage
• Up to 3A Programmable Boost Output Current
• Negative Temperature Coefficient Pin for Temperature Monitoring
• Discharge Mode Load Trace Compensation
• Programmable Timer Back-Up Protection
• Thermal Regulation and Thermal Shutdown
• Integrated Short-Circuit Protection for Boost Mode
• Internal Battery Reverse Leakage Blocking
• 4 LEDs Battery Level and Status Indication
• 4mmx4mm QFN-26 Package

• Power Station Applications
• Mobile Internet Devices
• USB PD Power Banks

All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance.

'MPS' and 'The Future of Analog IC Technology' are Registered Trademarks of Monolithic Power Systems, Inc.

ADAM (Analog Digital Adaptive Modulation), AAM (….) are Trademarks of Monolithic Power Systems, Inc.

VIN = 5V, TA = 25°C, unless otherwise noted.

Thermal Resistance (5) θ JA θ JC QFN-26 (4mmx4mm) .............. 42 ........ 9 .... °C/W

Table 1: Operation Mode Table

Note: (1) MODE=high and pushing P B to start the discharge.