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参数资料
| 型号： | S-1137B19-M5T1U |
| 元件分类： | 固定正电压单路输出LDO稳压器 |
| 英文描述： | 1.9 V FIXED POSITIVE LDO REGULATOR, 0.42 V DROPOUT, PDSO5 |
| 封装： | HALOGEN AND LEAD FREE, SOT-23, 5 PIN |
| 文件页数： | 13/47页 |
| 文件大小： | 500K |
| 代理商： | S-1137B19-M5T1U |
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HIGH RIPPLE-REJECTION LOW DROPOUT SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
S-1137 Series
Rev.2.0_01
Seiko Instruments Inc.
20
4.
Discharge shunt function (S-1137 Series A / B types)
The S-1137 Series A / B types have a built-in discharge shunt circuit to discharge the output capacitance.
When the
ON / OFF pin is set to power-off level, turns the output transistor off, and turns the discharge shunt function on so that
the output capacitor discharges.
These types allow for the VOUT pin reach the VSS level faster than the S-1137
Series C / D types that does not have a discharge shunt circuit.
Output transistor : OFF
ON / OFF Pin
: Power-off
VIN
ON / OFF
VSS
Power-off circuit
Discharge shunt function
: ON
VOUT
*1
*1. Parasitic diode
Current flow
GND
*1
S-1137 Series
Output
capacitance
(CL)
Figure 19
5.
Overcurrent protection circuit
The S-1137 Series has an overcurrent protection circuit having the characteristics shown in “(1) Output Voltage vs.
Output Current (When Load Current Increases) (Ta = 25
°C)” in “ Characteristics (Typical Data)”, in order to
protect the output transistor against an excessive output current and short circuiting between the VOUT and VSS pins.
The current (Ishort) when the output pin is short-circuited is internally set at approx. 150 mA (typ.), and the normal value
is restored for the output voltage, if releasing a short circuit once.
Caution Using the overcurrent protection circuit is to protect the output transistor from accidental conditions
such as short circuited load and the rapid and large current flow in the large capacitor. The
overcurrent protection circuit is not suitable for use under the short circuit status or large current
flowing (300 mA or more) that lasts long.
6.
Pull-down resistor (S-1137 Series A / C types)
In the S-1137 Series A / C types, the ON / OFF pin is internally pulled down to VSS, so the VOUT pin is in the VSS level
when in the floating status.
IC’s current consumption increases as much as current flows into the pull-down resistor of 2.2 M
Ω (typ.) when the ON /
OFF pin is connected to VIN and the S-1137 Series A / C types is operating.
相关PDF资料 |
PDF描述 |
|---|---|
| S-1137B19-U5T1G | 1.9 V FIXED POSITIVE LDO REGULATOR, 0.42 V DROPOUT, PDSO5 |
| S-1137B19-U5T1U | 1.9 V FIXED POSITIVE LDO REGULATOR, 0.42 V DROPOUT, PDSO5 |
| S-1137C15-I6T2G | 1.5 V FIXED POSITIVE LDO REGULATOR, 0.47 V DROPOUT, PDSO6 |
| S-1137C15-I6T2U | 1.5 V FIXED POSITIVE LDO REGULATOR, 0.47 V DROPOUT, PDSO6 |
| S-1137C15-M5T1S | 1.5 V FIXED POSITIVE LDO REGULATOR, 0.47 V DROPOUT, PDSO5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| S-1137B21-I6T2G | 功能描述:低压差稳压器 - LDO LINEAR LDO REG HI 60UA IQ 300MA IOUT RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| S-1137B27-I6T2G | 制造商:Seiko Instruments Inc (SII) 功能描述:LINEAR LDO REG HI 60UA IQ 300MA IOUT |
| S-1137B27-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 |
| S-1137B28-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 |
| S-1137B29-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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