19-1863; Rev 0; 11/00
MAX1772 Evaluation Kit
General Description
Features
o Input Current Limiting
The MAX1772 evaluation kit (EV kit) is an accurate and
efficient multichemistry battery charger. It uses analog
inputs to control charge voltage and current. The EV kit
can charge any battery with charge current up to 4A.
High efficiency is achieved by a buck topology with
synchronous rectification. The EV kit provides outputs
that can be used to monitor the input current, battery
charging current, and the presence of an AC adapter.
o ±±0.7 ꢀutput ꢁVotꢂge ꢃAAurꢂAc
o ꢃnꢂoVg Inputs CVntrVo Chꢂrge Current ꢂnd
Chꢂrge ꢁVotꢂge
o MVnitVr ꢀutputs fVr:
Current Drꢂwn frVm ꢃC Input SVurAe
Chꢂrging Current
The MAX1772 EV kit is a fully assembled and tested
surface-mount printed circuit (PC) board.
ꢃC ꢃdꢂpter PresenAe
o Up tV 1802ꢁ Bꢂtterc ꢁVotꢂge
o +8ꢁ tV +28ꢁ Input ꢁVotꢂge
o 4ꢃ (mꢂx) Bꢂtterc Chꢂrge Current
Ordering Information
PꢃRT
TEMP0 RꢃNGE
IC PꢃCKꢃGE
o Chꢂrges ꢃnc Bꢂtterc Chemistrc: Li+, NiCd, NiMH,
Leꢂd ꢃAid, etA0
MAX1772EVKIT
0°C to +70°C
28 QSOP
o Fuooc ꢃssemboed ꢂnd Tested
o SurfꢂAe-MVunt CVmpVnents
Component List
DESIGNꢃTIꢀN
QTY
DESCRIPTIꢀN
Not installed
DESIGNꢃTIꢀN
QTY
DESCRIPTIꢀN
C21, C22, C24
0
22µF, 35V low-ESR tantalum
capacitors
AVX TPSE226M035R0300 or
Sprague 593D226X0035E2W
Schottky diode (DPAK)
STM-Microelectronics
STPS8L30B or
C1−C4
4
D1
1
ON Semiconductor MBRD630CT
or Toshiba U5FWK2C42
1µF, 50V ceramic cap (1210)
Murata GRM42-2X7R105K050
C5
1
2
0.47µF, 25V ceramic capacitors
(1206)
Taiyo Yuden TMK316BJ474ML
30V, 3A Schottky diode
Nihon EC31QS03L
D2
1
2
C6, C7
100mA Schottky diodes (SOT23)
Central Semiconductor
CMPSH-3 or Hitachi HRB0103A
4.7µF, 16V tantalum capacitor
Sprague 595D475X0016A2B
D3, D4
C8
1
1
2
2
0.022µF ceramic capacitor
(0805)
22µH, 3.6A power inductor
Sumida CDRH127-220
C9
L1
N1
N2
1
1
1
0.01µF ceramic capacitors
(0805)
N-channel MOSFET
Fairchild FDS6680
C10, C11
C12, C13
1µF, 10V ceramic caps (0805)
Taiyo Yuden LMK212BJ105MG
N-channel MOSFET
Fairchild FDS6612A
0.040Ω 1ꢀ, 1W resistor
Dale WSL-2512-R040-F or
IRC LR2512-01-R040-F
0.1µF, 50V ceramic capacitors
(0805) Taiyo Yuden
UMK212BJ104MG or Murata
GRM40-034X7R104M050
R1
1
C14−C20, C23
8
________________________________________________________________ Maxim Integrated Products
1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.