MAX1782ETM+T Maxim Integrated, MAX1782ETM+T Datasheet - Page 8

• Manufacturer Part Number: MAX1782ETM+T
• Description: Battery Management Adv Smart Battery Pack Controller
• Manufacturer: Maxim Integrated
• Series: MAX1782r

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.
8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2000 Maxim Integrated Products
SOT23, Single-Cell Li+ Battery Charger
for Current-Limited Supply
further slow switching edges and prevent transient
spikes.
C
to the following equations:
The MAX1736 controls the GATE slew rate; conse-
quently, PC board layout is not as sensitive to noise as
a high-frequency switching regulator. In addition, since
cell voltage is sensed both during and between high-
current pulses, the system is insensitive to ground
errors. However, Maxim recommends maintaining large
ground area and large traces for high-current paths.
Refer to the MAX1736EVKIT for a recommended layout
example.
CT
sets the minimum on-time and off-time according
t
t
OFF(MIN)
ON(MIN)
= 5
= 1
✕
✕
10
10
Layout Guidelines
5
5
x C
x C
CT
Printed USA
CT
Figure 3. Simple Application Circuit
TRANSISTOR COUNT: 1622
is a registered trademark of Maxim Integrated Products.
CURRENT-LIMITED
WALL CUBE
(800mA)
100k
0.1µF
0.33µF
Package Information
0.22µF
Chip Information
IN
CT
MAX1736
FDC638P
GATE
PFET
BATT
GND
2.2µF
SINGLE
Li+ CELL