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参数资料
| 型号： | MAX1772EEI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/20页 |
| 文件大小： | 0K |
| 描述： | IC BAT CHRG BUILD BLCK 28QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 多化学 |
| 电源电压： | 8 V ~ 28 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 28-QSOP |
| 包装： | 带卷 (TR) |
Low-Cost, Multichemistry Battery-
Charger Building Block
Pin Description
PIN
1
2
3
4
5
6
7
8, 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
NAME
DCIN
LDO
CLS
REF
CCS
CCI
CCV
GND
ICHG
ACIN
ACOK
REFIN
ICTL
VCTL
CELLS
BATT
CSIN
CSIP
PGND
DLO
DLOV
LX
DHI
BST
CSSN
CSSP
IINP
FUNCTION
Charging Voltage Input
Device Power Supply. Output of the 5.4V linear regulator supplied from DCIN. Bypass LDO with a 1μF
capacitor to GND.
Source Current-Limit Input. Voltage input for setting the current limit of the input source.
4.096V Voltage Reference. Bypass REF with a 1μF capacitor to GND.
Input Current Regulation Loop Compensation Point. Connect a 0.01μF capacitor from CCS to GND.
Output Current Regulation Loop Compensation Point. Connect a 0.01μF capacitor from CCI to GND.
Voltage Regulation Loop Compensation Point. Connect 1k Ω resistor in series with a 0.1μF capacitor
to GND.
Analog Ground
ICHG is a scaled-down replica of the battery output current being sensed. It is used to monitor the
charging current and indicates when the chip changes from voltage mode to current mode. The
transconductance of (CSIP - CSIN) to ICHG is 1μS. Connect ICHG pin to GND if it is unused.
AC Detect Input. Detects when the AC adapter voltage is available for charging.
AC Detect Output. Open-drain output is high when ACIN is less than REF/2.
Reference Input. Allows the ICTL and VCTL pins to have ratiometric ranges for increased DAC
accuracy.
Input for Setting Maximum Output Current. Range is REFIN/32 to REFIN. The device shuts down if
this pin is forced below REFIN/55 (typ).
Input for Setting Maximum Output Voltage. Range is 0 to REFIN.
Trilevel Input for Setting Number of Cells. GND = 2 cells, LDO/2 = 3 cells, LDO = 4 cells.
Battery Voltage Input
Output Current-Sense Negative Input
Output Current-Sense Positive Input. Connect a current-sense resistor from CSIP to CSIN.
Power Ground
Low-Side Power MOSFET Driver Output. Connect DLO to a low-side nMOS gate.
Low-Side Driver Supply
Power Connection for the High-Side Power MOSFET Driver. Connect LX to a source of high-side nMOS.
High-Side Power MOSFET Driver Output. Connect DHI to a high-side nMOS gate.
Power Connection for the High-Side Power MOSFET Driver. Connect a 0.1μF capacitor from LX to
BST.
Input Current-Sense for Charger (negative input)
Input Current-Sense for Charger (positive input). Connect a current-sense resistor from CSSP to
CSSN.
IINP is a scaled-down replica of the input current being sensed. It is used to monitor the total system
current. The transconductance of (CSSP - CSSN) to IINP is 1mS. Connect IINP pin to GND if it is unused.
10
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| MAX1773AEUP+T | 功能描述:电池管理 Power Source Selector for Dual-Battery Systems RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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