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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： 4/32页
文件大小： 183K
代理商： MAX1644
M
Advanc ed Chemistry-Independent, Level 2
Battery Charger with Input Current Limiting
4
_______________________________________________________________________________________
V
SDA
= 0.4V
V
INT
= 5.65V
All 4 comparators, V
DD
= 2.8V to 5.65V
V
DD
= 2.8V to 5.65V, V
THM
falling
V
DD
= 2.8V to 5.65V, V
THM
falling
DLO high or low, V
DLOV
= 4.5V
DHI high or low, V
BST
- V
LX
= 4.5V
V
DD
= 2.8V to 5.65V, V
THM
falling
V
DD
= 2.8V to 5.65V, V
THM
falling
R
CSI
= 50m
V
DLOV
= V
LDO
, DLO low
V
DCIN
= 28V, V
BATT
= V
LX
= 20V
V
DCIN
= 0, V
BATT
= V
LX
= 20V
DHI high
V
THM
= 4% of V
DD
to 96% of V
DD
,
V
DD
= 2.8V to 5.65V
CONDITIONS
mA
μA
6
SDA Output Low Sink Current
INT
Output High Leakage
INT
Output Low Voltage
SMB INTERFACE TIMING SPECIFICATIONS
(V
DD
= 2.8V to 5.65V, Figures 4 and 5)
μA
-1
1
SDA/SCL Input Bias Current
mV
220
SDA/SCL Input Hysteresis
V
1.4
SDA/SCL Input High Voltage
V
0.6
SDA/SCL Input Low Voltage
1
Thermistor Comparator
Threshold Hysteresis
6
7.5
9
Thermistor Underrange
Threshold
% of V
DD
% of V
DD
22
23.5
25
Thermistor Hot Threshold
74
75.5
77
Thermistor Cold Threshold
89.5
91
92.5
Thermistor Overrange Threshold
μA
-1
1
THM Input Bias Current
ms
%
μA
μA
μA
5
10
15
t
ON
Maximum On-Time
Maximum Duty Cycle
LX Input Bias Current
LX Input Quiescent Current
BST Supply Current
μs
1
1.25
1.5
t
OFF
Minimum Off-Time
6
14
DLO Output Resistance
THERMISTOR COMPARATOR SPECIFICATIONS
6
14
DHI Output Resistance
A
5.0
6.0
7.0
Inductor Peak Current Limit
μA
5
10
DLOV Supply Current
99
99.99
200
500
1
15
6
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
I
INT
= 1mA
mV
25
200
1
ns
0
t
HD:DAT
SDA Hold Time from SCL
ns
250
t
SU:DAT
SDA Setup Time from SCL
μs
μs
4
t
HIGH
t
LOW
SCL High Period
SCL Low Period
4.7
μs
4.7
t
SU:STA
Start Condition Setup Time
from SCL
μs
4
t
HD:STA
Start Condition Hold Time
from SCL
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
DD
= +3.3V, V
BATT
= +16.8V, V
DCIN
= +18V,
T
A
= 0°C to +85°C
, unless otherwise noted. Typical values are at
T
A
= +25°C.)
% of V
DD
% of V
DD
% of V
DD
DC-TO-DC CONVERTER SPECIFICATIONS
SMB INTERFACE LEVEL SPECIFICATIONS
(V
DD
= 2.8V to 5.65V)
相关PDF资料
PDF描述
MAX1645B Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting
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MAX1644EAE+T 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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