19-1863; Rev 0; 11/00
MAX1772 Evaluation Kit
General Description
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.
The MAX1772 EV kit is a fully assembled and tested
surface-mount printed circuit (PC) board.
o
Input Current Limiting
o
鹵0.7% Output Voltage Accuracy
o
Analog Inputs Control Charge Current and
Charge Voltage
o
Monitor Outputs for:
Current Drawn from AC Input Source
Charging Current
AC Adapter Presence
o
Up to 18.2V Battery Voltage
o
+8V to +28V Input Voltage
Features
Evaluates: MAX1772
Ordering Information
PART
MAX1772EVKIT
TEMP. RANGE
0擄C to +70擄C
IC PACKAGE
28 QSOP
o
4A (max) Battery Charge Current
o
Charges Any Battery Chemistry: Li+, NiCd, NiMH,
Lead Acid, etc.
o
Fully Assembled and Tested
o
Surface-Mount Components
Component List
DESIGNATION
QTY
DESCRIPTION
22碌F, 35V low-ESR tantalum
capacitors
AVX TPSE226M035R0300 or
Sprague 593D226X0035E2W
1碌F, 50V ceramic cap (1210)
Murata GRM42-2X7R105K050
0.47碌F, 25V ceramic capacitors
(1206)
Taiyo Yuden TMK316BJ474ML
4.7碌F, 16V tantalum capacitor
Sprague 595D475X0016A2B
0.022碌F ceramic capacitor
(0805)
0.01碌F ceramic capacitors
(0805)
1碌F, 10V ceramic caps (0805)
Taiyo Yuden LMK212BJ105MG
0.1碌F, 50V ceramic capacitors
(0805) Taiyo Yuden
UMK212BJ104MG or Murata
GRM40-034X7R104M050
D2
1
DESIGNATION
C21, C22, C24
QTY
0
DESCRIPTION
Not installed
Schottky diode (DPAK)
STM-Microelectronics
STPS8L30B or
ON Semiconductor MBRD630CT
or Toshiba U5FWK2C42
30V, 3A Schottky diode
Nihon EC31QS03L
100mA Schottky diodes (SOT23)
Central Semiconductor
CMPSH-3 or Hitachi HRB0103A
22碌H, 3.6A power inductor
Sumida CDRH127-220
N-channel MOSFET
Fairchild FDS6680
N-channel MOSFET
Fairchild FDS6612A
0.040鈩?鹵1%, 1W resistor
Dale WSL-2512-R040-F or
IRC LR2512-01-R040-F
C1鈭扖4
4
D1
1
C5
1
C6, C7
2
C8
C9
C10, C11
C12, C13
1
1
2
2
D3, D4
2
L1
N1
N2
1
1
1
R1
1
C14鈭扖20, 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鈥檚 website at www.maxim-ic.com.
1
2
3
4
