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参数资料
型号： MAX1642-MAX1643
厂商： Maxim Integrated Products, Inc.
元件分类： DC/DC变换器
英文描述： High-Efficiency, Step-Up DC-DC Converters for 1V Inputs
中文描述： 高效率，升压型DC - DC转换器为1V的输入
文件页数： 2/12页
文件大小： 130K
代理商： MAX1642-MAX1643
M
High-Effic ienc y, S tep-Up
DC-DC Converters for 1V Inputs
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
BATT to GND ...........................................................-0.3V to 6.0V
BATT Forward Current..........................................................0.5A
OUT to GND.............................................................-0.3V to 6.0V
OUT, LX Current.......................................................................1A
LX to GND................................................................-0.3V to 6.0V
SHDN
, FB,
BATTLO
,
PFO
to GND...........................-0.3V to 6.0V
PFI to GND ............................................................-0.3V to V
BATT
Reverse Battery Current (T
A
= +25°C) (Note 1) ...............220mA
Continuous Power Dissipation
μMAX (derate 4.1mW/°C above 70°C)..........................330mW
Operating Temperature Range
MAX1642EUA/MAX1643EUA ............................-40°C to +85°C
J unction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +165°C
Lead Temperature (soldering, 10sec) .............................+300°C
R
L
= 3k
, T
A
= +25°C
V
FB
= 1.3V
Falling PFI, hysteresis = 1%
V
PFI
= 650mV
I
LOAD
= 20mA
V
BATT
= 1.0V (MAX1642)
0.9V < V
BATT
< 1.5V (t
ON
= K / V
BATT
)
0.9V < V
BATT
< 1.5V, V
OUT
= 3.3V
V
OUT
= 3.5V (MAX1642)
I
DIODE
= 100mA, P-channel switch off
V
OUT
= 3.3V
V
FB
< 0.1V
External feedback
External feedback
V
OUT
= 3.3V
V
OUT
= 3.5V
CONDITIONS
nA
mV
nA
10
632
10
FB Input Current
PFI Trip Voltage
PFI Input Current
%
80
η
Efficiency
μA
2
3.5
I
SHDN,BATT
Shutdown Current into BATT
μA
0.1
1
I
SHDN,OUT
Shutdown Current into OUT
μA
4
6.5
I
QBATT
Quiescent Current into BATT
μA
11
18
I
QOUT
Quiescent Current into OUT
1
1.5
RATIO
Off-Time Tracking Ratio (Note 3)
mV/°C
V
V
V
-2
Start-Up Voltage Tempco
Output Voltage
Output Voltage Range
FB Set Voltage
N-Channel On-Resistance
V
0.88
V
V
0.7
V
BATT(MIN)
Minimum Operating Input Voltage
Maximum Operating Input Voltage
Start-Up Voltage (Note 2)
V-μs
17
25
35
K
On-Time Constant
V
0.8
P-Channel Catch-Diode Voltage
1.5
2.2
P-Channel On-Resistance
3.16
2.0
1.18
3.30
3.44
5.2
1.27
1.5
V
OUT
1.225
1
V
FB
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
ELECTRICAL CHARACTERISTICS
(V
BATT
= V
SHDN
= 1.3V, I
LOAD
= 0mA, FB = GND,
T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25°C.)
Note 1:
The reverse battery current is measured from the Typical Operating Circuits input terminal to GND when the battery is con-
nected backward. A reverse current of 220mA will not exceed package dissipation limits but, if left for an extended time
(more than 10 minutes), may degrade performance.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
1.65
590
614
V
PFI
= 0V, V
OUT
= 3.3V, I
SINK
= 1mA
V
PFI
= 650mV, V
PFO
= 6V
V
0.4
1
V
OL
PFO
,
BATTLO
Low Output Voltage
PFO
,
BATTLO
Leakage Current
V
OUT
= 3.3V, hysteresis = 2% (MAX1643)
% of V
BATT
(MAX1642)
V
%
0.96
1.0
1.04
20
BATTLO
Trip Voltage
SHDN
Input Low Voltage
μA
% of V
BATT
(MAX1642)
(MAX1642)
%
nA
80
V
IH
SHDN
Input High Voltage
SHDN
Input Current
V
IL
10
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相关代理商/技术参数
参数描述
MAX1643ESA 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX1643EUA 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
MAX1643EUA+ 功能描述:直流/直流开关转换器 Integrated Circuits (ICs) 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
MAX1643EUA+T 功能描述:直流/直流开关转换器 Integrated Circuits (ICs) 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
MAX1643EUA-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
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