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参数资料
| 型号： | MAX1734EUK18+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/8页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 1.8V SOT23-5 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 1.8V |
| 输入电压： | 2.7 V ~ 5.5 V |
| 频率 - 开关： | 1.2MHz |
| 电流 - 输出： | 250mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | SOT-23-5 |
Low-Voltage, Step-Down DC-DC Converters
in SOT23
ELECTRICAL CHARACTERISTICS
(V IN = +2.7V to +5.5V, SHDN = IN, T A = -40 ° C to +85 ° C , unless otherwise noted.) (Note 1)
PARAMETER
Input Voltage Range
Startup Voltage
UVLO Threshold
SYMBOL
V IN
V START
V UVLO
CONDITIONS
V IN rising, 200mV typical hysteresis
V IN falling
MIN
2.7
1.55
MAX
5.5
2.0
1.95
UNITS
V
V
V
Quiescent Supply Current
Shutdown Supply Current
Output Voltage Range (MAX1733)
I IN
I SHDN
V OUT
No switching (FB/OUT above trip point)
SHDN = GND
1.25
70
4
2.0
μ A
μ A
V
Output Voltage Accuracy
(MAX1734)
I OUT = 0 to 250mA
-3
+3
%
OUT Sense Current (MAX1734)
I OUT
V OUT = V REG , V IN = V SHDN = 5V
8
μ A
FB Feedback Threshold
(MAX1733)
V FB
V IN = 3.6V
1.210
1.280
V
FB Leakage Current (MAX1733)
SHDN Input High Voltage
SHDN Input Low Voltage
SHDN Leakage Current
I FB
V IH
V IL
I SHDN
V FB = 1.5V
2.7V < V IN < 5.5V
2.7V < V IN < 5.5V
SHDN = GND or IN
1.6
0.2
0.4
1
μ A
V
V
μ A
High-Side Current Limit
Low-Side Current Limit
High-Side On-Resistance
Rectifier On-Resistance
LX Leakage Current
LX Reverse Leakage Current
Minimum On-Time
Minimum Off-Time
I LIMP
I LIMN
R ONP
R ONN
I LXLEAK
I LXLK,R
t ON(MIN)
t OFF(MIN)
I LX = -50mA, V IN = 3.0V
I LX = -50mA, V IN = 5.5V
I LX = -50mA, V IN = 3.0V
I LX = -50mA, V IN = 5.5V
V IN = 5.5V, V LX = 0 to V IN
IN unconnected, V LX = 5.5V, SHDN = GND
300
200
0.25
0.25
565
430
1.4
1.1
2
1.6
5
5
0.55
0.55
mA
mA
?
?
μ A
μ A
μ s
μ s
Note 1: All devices are 100% production tested at T A = +25 ° C. Limits over the operating temperature range are guaranteed by design.
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