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参数资料
| 型号： | MAX1644 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting |
| 中文描述： | 2A、低电压、降压型稳压器，内置同步整流与开关 |
| 文件页数： | 6/32页 |
| 文件大小： | 183K |
| 代理商： | MAX1644 |
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M
Advanc ed Chemistry-Independent, Level 2
Battery Charger with Input Current Limiting
6
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
DD
= +3.3V, V
BATT
= +16.8V, V
DCIN
= +18V,
T
A
= -40°C to +85°C
, unless otherwise noted. Guaranteed by design.)
Maximum Duty Cycle
99
%
Minimum Off-Time
Maximum On-Time
t
OFF
t
ON
1
5
1.5
15
μs
ms
PARAMETER
SYMBOL
MIN
50
MAX
150
20
UNITS
k
μA
4.124
4.260
8.266
8.534
12.391
12.793
BATT Full-Charge Voltage
V0
16.532
17.068
V
BATT Charge Current (Note 3)
I0
2.608
3.408
A
15.2
240.8
mA
DCIN Source Current Limit
(Note 3)
4.358
2.054
5.882
3.006
A
CVS Input Bias Current
ERROR AMPLIFIER SPECIFICATIONS
PDL Turn-On Resistance
BATT Undervoltage Charge
Current
20
200
mA
BATT/CSIP/CSIN Input Voltage
Range
0
20
V
Total BATT Input Bias Current
-700
700
μA
Total BATT Quiescent Current
-100
100
μA
Total BATT Standby Current
-5
5
μA
CSSP/Input Bias Current
CSSN Input Bias Current
-100
-100
1000
100
μA
μA
CSSP/CSSN Quiescent Current
-1
1
μA
Battery Voltage-Error Amp DC
Gain
200
V/V
CLS Input Bias Current
-1
1
μA
Battery Voltage-Error Amp
Transconductance
0.111
0.444
μA/mV
Battery Current-Error Amp
Transconductance
0.5
2
μA/mV
Input Current-Error Amp
Transconductance
0.5
2
μA/mV
CCV/CCI/CCS Clamp Voltage
(Note 4)
150
600
mV
CONDITIONS
V
BATT
= 1V, R
CSI
= 50m
ChargingVoltage() = 0x1060
ChargingVoltage() = 0x20D0
ChargingVoltage() = 0x3130
ChargingVoltage() = 0x41A0
R
CSI
= 50m
Total of I
BATT
, I
CSIP,
and I
CSIN
;
V
BATT
= 0 to 20V
Total of I
BATT
, I
CSIP,
and I
CSIN
;
V
BATT
= 0 to 20V, charge inhibited
R
CSS
= 40m
Total of I
BATT
, I
CSIP,
and I
CSIN
;
V
BATT
= 0 to 20V, V
DCIN
= 0
V
CSSP
= V
CSSN
= V
DCIN
= 28V
V
CSSP
= V
CSSN
= V
DCIN
= 28V
V
CSSP
= V
CSSN
= 28V, V
DCIN
= 0
PDL to GND
V
CVS
= 28V
From BATT to CCV
V
CLS
= V
REF
/2 to V
REF
From BATT to CCV, ChargingVoltage() =
0x41A0, V
BATT
= 16.8V
From CSIP/CSIN to CCI, ChargingCurrent() =
0x0BC0, V
CSIP
-V
CSIN
= 150.4mV
From CSSP/CSSN to CCS, V
CLS
= 2.048V,
V
CSSP
- V
CSSN
= 102.4mV
V
CCV
= V
CCI
= V
CCS
= 0.25V to 2V
ChargingCurrent() =
0x0BC0
ChargingCurrent() =
0x0080
V
CLS
= 4.096V
V
CLS
= 2.048V
DC-TO-DC CONVERTER SPECIFICATIONS
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相关代理商/技术参数 |
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|---|---|
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| MAX1644EAE/GH9-T | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1644EAE+ | 功能描述:直流/直流开关转换器 2A Step-Dow w/Synch Rectification RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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