Datasheet

MAX1736
SOT23, Single-Cell Li+ Battery Charger
for Current-Limited Supply
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
IN, GATE to GND....................................................-0.3V to +26V
BATT, EN, CT to GND ..............................................-0.3V to +6V
GATE to IN................................................................-6V to +0.3V
GATE Continuous Current.................................-10mA to +10mA
Continuous Power Dissipation (T
A
= +70°C) (Note 1)
6-Pin SOT23 (derate 8.1mW/°C above +70°C).............0.65W
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range ..............................-65°C to +150°C
Maximum Junction Temperature ......................................+150°C
Lead Temperature (soldering, 10s) (Note 2) ...................+300°C
ELECTRICAL CHARACTERISTICS
(V
IN
= 10V, V
BATT
= 4.2V for MAX1736EUT42 or 4.1V for MAX1736EUT41, T
A
= 0°C to +85°C. Typical values are at T
A
= +25°C,
unless otherwise noted.) (Note 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Voltage (Note 4) External P-MOSFET off 4.7 22 V
Fast-Charge BATT Qualification
Threshold
BATT rising, transition from precharge to fast charge 2.4 2.5 2.65 V
Fast-Charge BATT Qualification
Threshold Hysteresis
70 mV
MAX1736EUT42 4.179 4.20 4.221
BATT Regulation Voltage
MAX1736EUT41 4.079 4.10 4.121
V
BATT Removal Detection
Threshold
BATT rising 4.875 5.0 5.1 V
BATT Removal Detection
Threshold Hysteresis
125 mV
BATT Input Current, Input Power
Removed
V
IN
≤ V
BATT
- 0.3V 0.1 1 µA
BATT Input Current, Charger
Disabled
EN = GND, V
BATT
= 0 to 5V 2 6 µA
BATT Input Current, When
Charging
0.4 0.75 mA
Precharge Source Current V
BATT
= 2V 3.5 6 8 mA
IN Input Current 0.25 1 mA
IN Detection Interval (Note 5) C
CT
= 0.33µF 20 s
GATE Source/Sink Current 75 100 125 µA
GATE Drive Source Current at
Battery Removal
V
BATT
= 5.1V 15 30 60 mA
Minimum BATT Bypass
Capacitance (Note 6)
1.5 µF/A
EN Logic High Threshold 2V
EN Logic Low Threshold 0.7 V
CT Pulldown Current 1.6 2 2.4 µA
Note 1: Thermal properties are specified with product mounted on PC board with one square-inch of copper area and still air.
Note 2: This device is constructed using a unique set of packaging techniques that impose a limit on the termal profile the device can be
exposed to during solder attach and rework. This limit permits only the use of the solder profiles recommended in the industry stan-
dard specification, IPC/JEDEC J-STD-020A, paragraph 7.6, Table 3 for the IR/VPR and Convention reflow. Pre-heating is required.
Hand or wave soldering is not allowed.