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参数资料
| 型号： | S-1137B12-U5T1G |
| 元件分类： | 固定正电压单路输出LDO稳压器 |
| 英文描述： | 1.2 V FIXED POSITIVE LDO REGULATOR, 0.67 V DROPOUT, PDSO5 |
| 封装： | LEAD FREE, SOT-89, 5 PIN |
| 文件页数： | 11/47页 |
| 文件大小： | 500K |
| 代理商： | S-1137B12-U5T1G |
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HIGH RIPPLE-REJECTION LOW DROPOUT SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
Rev.2.0_01
S-1137 Series
Seiko Instruments Inc.
19
3.
ON / OFF pin
This pin starts and stops the regulator.
When the ON / OFF pin is set to the power-off level, the entire internal circuit stops operating, and the built-in P-
channel MOS FET output transistor between the VIN and VOUT pins is turned off, reducing current consumption
significantly. The S-1137 has a discharge shunt circuit which discharges the capacitor for soft-start (CSS) so that the
SSC pin is forcibly set to the VSS level.
Since the S-1137 Series A / B types have a built-in discharge shunt circuit to discharge the output capacitance, the
VOUT pin is forcibly set to VSS level. In the S-1137 Series C / D types, the VOUT pin is set to VSS level through several
hundred k
Ω internal divided resistors between the VOUT and VSS pins.
Note that the current consumption increases when a voltage of 0.3 V to 1.0 V (Ta = 25
°C) is applied to the ON / OFF
pin. The ON / OFF pin is configured as shown in Figures 17 and 18. In the S-1137 Series A / C types, the ON / OFF
pin is internally pulled down to VSS in the floating status, so the VOUT pin is set to the VSS level. In the S-1137 Series
B / D types, the ON / OFF pin is not internally pulled down, so do not use these types with the ON / OFF pin in the
floating status. When not using the ON / OFF pin in the S-1137 Series B / D types, connect the pin to the VIN pin.
Table 11
Logic Type
ON / OFF Pin
Internal Circuits
VOUT Pin Voltage
Current Consumption
A / B / C / D
“H”: Power-on
Operate
Set value
ISS1
*1
A / B / C / D
“L”: Power-off
Stop
VSS level
ISS2
*1.
IC’s current consumption increases as much as current flows into the pull-down resistor when the ON / OFF
pin is connected to VIN and the S-1137 Series A / C types is operating (Figure 17).
(1) S-1137 Series A / C Type
(2) S-1137 Series B / D Type
VSS
VIN
ON / OFF
VSS
VIN
ON / OFF
Figure 17
Figure 18
相关PDF资料 |
PDF描述 |
|---|---|
| S-1137B12-U5T1U | 1.2 V FIXED POSITIVE LDO REGULATOR, 0.67 V DROPOUT, PDSO5 |
| S-1137B19-I6T2G | 1.9 V FIXED POSITIVE LDO REGULATOR, 0.42 V DROPOUT, PDSO6 |
| S-1137B19-I6T2U | 1.9 V FIXED POSITIVE LDO REGULATOR, 0.42 V DROPOUT, PDSO6 |
| S-1137B19-M5T1S | 1.9 V FIXED POSITIVE LDO REGULATOR, 0.42 V DROPOUT, PDSO5 |
| S-1137B19-M5T1U | 1.9 V FIXED POSITIVE LDO REGULATOR, 0.42 V DROPOUT, PDSO5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| S-1137B13-M5T1S | 制造商:Seiko Instruments Inc (SII) 功能描述: |
| S-1137B13-U5T1G | 制造商:Seiko Instruments Inc (SII) 功能描述: |
| S-1137B14-I6T2G | 制造商:Seiko Instruments Inc (SII) 功能描述:LINEAR LDO REG HI 60UA IQ 300MA IOUT |
| S-1137B14-M5T1S | 制造商:Seiko Instruments Inc (SII) 功能描述: |
| S-1137B15-I6T2U | 功能描述:IC REG LINEAR 300MA SNT6A 制造商:ablic u.s.a. inc. 系列:* 包装:剪切带（CT） 零件状态:在售 稳压器数:1 电流 - 输出:300mA 工作温度:-40°C ~ 85°C（TA） 安装类型:表面贴装 封装/外壳:6-SMD，扁平引线 供应商器件封装:SNT-6A（H） 标准包装:1 |
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