Product Summary

The MAX1737EEI is a switch-mode lithium-ion (Li+) battery charger that charges one to four cells. The MAX1737EEI provides a regulated charging current and a regulated voltage with only a ±0.8% total voltage error at the battery terminals. The MAX1737EEI external N-channel switch and synchronous rectifier provide high efficiency over a wide input voltage range. A built-in safety timer automatically terminates charging once the adjustable time limit has been reached. The applications of the MAX1737EEI include Notebook Computers, Hand-Held Instruments, Li+ Battery Packs and Desktop Cradle Chargers.

Parametrics

MAX1737EEI absolute maximum ratings: (1)CSSP, CSSN, DCIN to GND: -0.3V to +30V; (2)BST, DHI to GND: -0.3V to +36V; (3)BST to LX: -0.3V to +6V; (4)DHI to LX: -0.3V to ((BST - LX) + 0.3V); (5)LX to GND: -0.3V to (CSSN + 0.3V); (6)FULLCHG, FASTCHG, FAULT to GND: -0.3V to +30V; (7)VL, VLO, SHDN, CELL, TIMER1, TIMER2, CCI, CCS, CCV, REF, ISETIN, ISETOUT, VADJ, THM to GND: -0.3V to +6V; (8)DLO to GND: -0.3V to (VLO + 0.3V); (9)BATT, CS to GND: -0.3V to +20V; (10)PGND to GND, CSSP to CSSN: -0.3V to +0.3V; (11)VL to VLO : -0.3V to +0.3V; (12)VL Source Current: 50mA; (13)Continuous Power Dissipation: 860mW; (14)Operating Temperature Range: -40 to +85μA; (15)Junction Temperature: +150℃; (16)Storage Temperature Range: -65 to +150℃; (17)Lead Temperature (soldering, 10s): +300℃.

Features

MAX1737EEI features: (1)Stand-Alone Charger for Up to Four Li+ Cells; (2)±0.8% Accurate Battery Regulation Voltage; (3)Low Dropout: 98% Duty Cycle; (4)Safely Precharges Near-Dead Cells; (5)Continuous Voltage and Temperature Monitoring ; (6)<1μA Shutdown Battery Current ; (7)Input Voltage Up to +28V; (8)Safety Timer Prevents Overcharging; (9)Input Current Limiting; (10)Space-Saving 28-Pin QSOP; (11)300kHz PWM Oscillator Reduces Noise; (12)90% Conversion Efficiency.

Diagrams

MAX1737EEI typical application circuit

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
MAX1737EEI
MAX1737EEI
Maxim Integrated Products
Battery Management Stand-Alone Switch-M L-Ion Battery Chargr
Data Sheet
Negotiable 
MAX1737EEI+
MAX1737EEI+
Maxim Integrated Products
Battery Management Stand-Alone Switch-M L-Ion Battery Chargr
Data Sheet
0-1: $4.49
1-25: $3.01
25-50: $2.18
50-100: $2.15
MAX1737EEI-T
MAX1737EEI-T
Maxim Integrated Products
Battery Management Stand-Alone Switch-M L-Ion Battery Chargr
Data Sheet
Negotiable 
MAX1737EEI+T
MAX1737EEI+T
Maxim Integrated Products
Battery Management Stand-Alone Switch-M L-Ion Battery Chargr
Data Sheet
0-1965: $1.97
1965-2500: $1.97