MAX1898EUB42+ Maxim Integrated Products, MAX1898EUB42+ Datasheet
MAX1898EUB42+
Specifications of MAX1898EUB42+
Related parts for MAX1898EUB42+
MAX1898EUB42+ Summary of contents
Page 1
... EN/OK 3 ISET µMAX ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. o Simple, Safe Linear Charger o Uses Low-Cost PNP or PMOS Pass Element o 4.5V to 12V Input Range o Internal Current-Sense Resistor o ±0.75% Voltage Accuracy ...
Page 2
Linear Charger for Single-Cell Li+ Battery ABSOLUTE MAXIMUM RATINGS IN, DRV, CS, CHG to GND .....................................-0.3V to +14V BATT, EN, ISET, RSTRT GND ........................-0.3V to +6V DRV to IN................................................................-14V to +0. Current ....................................................................±2A DRV Continuous ...
Page 3
Linear Charger for Single-Cell Li+ Battery ELECTRICAL CHARACTERISTICS (continued 8V 4V, EN/OK = open, RSET = 2.8kΩ, RSTRT = GND BATT +25°C.) A PARAMETER Maximum Voltage ( ...
Page 4
Linear Charger for Single-Cell Li+ Battery ELECTRICAL CHARACTERISTICS (continued 8V 4V, EN/OK = open, RSET = 2.8kΩ, RSTRT = GND BATT PARAMETER Done, RSTRT = GND, V MAX1898EUB42 and 4.0V for MAX1898EUB41 Done, RSTRT ...
Page 5
Linear Charger for Single-Cell Li+ Battery ( 4V, EN/OK = open, RSET = 2.8kΩ, RSTRT = GND BATT NORMALIZED TIMER PERIOD vs. TEMPERATURE 1.02 NORMALIZED TO +25°C 1.00 0.98 0.96 0.94 0.92 0.90 -15 ...
Page 6
Linear Charger for Single-Cell Li+ Battery PIN NAME 1 IN Sense Input. Detects power source; positive side of internal current-sense resistor. CHG Open-Drain LED Driver. See Table 1 for CHG output states. 2 Logic-Level Enable Input and Input Power OK ...
Page 7
Linear Charger for Single-Cell Li+ Battery DC IN 0.1µF LED 5mA CHG CT CHARGING FOR OSC 3hr 100nF CT TIMEOUT ISET RSET (2.8kΩ FOR 500mA CHARGE CURRENT) 280mV ISET (FALLING) CONTROL LOGIC DONE 100kΩ EN/OK ...
Page 8
Linear Charger for Single-Cell Li+ Battery 4.2 BATTERY VOLTAGE 4.0 3.8 AMP HOURS BATTERY CURRENT 3.6 3.4 POWER DISSIPATION 3 120 TIME (MINUTES) Figure 2. Li+ Charging Profile the ISET pin is 1mA per amp of ...
Page 9
Linear Charger for Single-Cell Li+ Battery power is present at IN. If there is no (or insufficient) voltage at IN, EN/OK will remain low and the charger will remain off. Battery Drain Current The MAX1898 uses advanced CMOS circuitry to ...
Page 10
Linear Charger for Single-Cell Li+ Battery 10% CHARGE CURRENT TIMEOUT/4 EXPIRES AND V < 2.5V BATT FAULT LED BLINKING AT 1.5Hz 100% CHARGER CURRENT ICHARGE > 22% OF ISET DOTTED LINE INDICATES THE STATES THAT ARE NOT AVAILABLE WHEN CT ...
Page 11
Linear Charger for Single-Cell Li+ Battery Selecting External Components The MAX1898 drives an external transistor to control charging current. The most important specifications for the pass transistor (MOSFET or bipolar) are current rating and package power dissipation. Since the MAX1898 ...
Page 12
... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...