MAX1772
Low-Cost, Multichemistry Battery-
Charger Building Block
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Table 2. Component List
22µF, 35V low-ESR tantalum capacitors
AVX TPSE226M035R0300 or
Sprague 593D226X0035E2W
C5
1µF, 50V ceramic capacitor (1210)
Murata GRM42-2X7R105K050
C6, C7
0.47µF, 25V ceramic capacitors (1210)
Murata GRM42-2X7R474K050
C9, C10 0.01µF ceramic capacitors (0805)
C12, C13
1µF, 10V ceramic capacitors (0805)
Taiyo Yuden LMK212BJ105MG
C11, C14, C15,
C16, C18, C19,
C20
0.1µF, 50V ceramic capacitors (0805)
Taiyo Yuden UMK212BJ104MG or
Murata GRM40-034X7R104M050
D1
Schottky diode (DPAK)
STM-Microelectronics STPS8L30B or
ON Semiconductor MBRD630CT or
Toshiba U5FWK2C42
D2
30V, 3A Schottky diode
Nihon EC31QS03L
D3, D4
100mA Schottky diodes (SOT23)
Central Semiconductor CMPSH-3 or
Hitachi HRB0103A
L1
22µH power inductor
Sumida CDRH127-220
DESCRIPTION
N1
n-channel MOSFET
International Rectifier IRF7805 or
Fairchild FDS6680
N2
n-channel MOSFET
Fairchild FDS6612A
RS1
0.04Ω ±1%, 1W resistor
Dale WSL-2512-R040-F or
IRC LR2512-01-R040-F
RS2
0.05Ω ±1%, 1W resistor
Dale WSL-2512-R050-F or
IRC LR2512-01-R050-F
R5 1kΩ ±5% resistor (0805)
R6 59.0kΩ ±1% resistor (0805)
R7 19.6kΩ ±1% resistor (0805)
R8 1MΩ ±5% resistor (0805)
R9 15.4kΩ ±1% resistor (0805)
R10 12.4kΩ ±1% resistor (0805)
R11, R12 1Ω ±5% resistors (0805)
R13 33Ω ±5% resistor (1206)
R14, R15 4.7Ω ±5% resistors (1206)
R19 29.4kΩ ±1% resistor (0805)
10kΩ ±1% resistors (0805)
Package Information
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
28 QSOP E28-1
21-0055
Chip Information
PROCESS: BiCMOS
