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| 型号： | S-1131B55UC-N5O-TFG |
| 元件分类： | 固定正电压单路输出LDO稳压器 |
| 英文描述： | 5.5 V FIXED POSITIVE LDO REGULATOR, 0.28 V DROPOUT, PDSO5 |
| 封装： | LEAD FREE, SOT-89, 5 PIN |
| 文件页数： | 6/30页 |
| 文件大小： | 407K |
| 代理商： | S-1131B55UC-N5O-TFG |
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HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1131 Series
Rev.4.0_00
Seiko Instruments Inc.
14
3. Shutdown pin (ON/OFF pin)
The products with shutdown function performs starting and a stop the regulator.
When the ON/OFF pin is set to the shutdown level, the operation of all internal circuits stops, and the built-
in P-channel MOS FET output transistor between the VIN pin and VOUT pin is turned off to substantially
reduce the current consumption. The VOUT pin becomes the Vss level due to the internally divided
resistance of several hundreds k
Ω between the VOUT pin and VSS pin.
The structure of the ON/OFF pin is as shown in Figure 14. Since the ON/OFF pin is neither pulled down
nor pulled up internally, do not use it in the floating state. In addition, note that the current consumption
increases if a voltage of 0.3 V to VIN – 0.3 V is applied to the ON/OFF pin. When the ON/OFF pin is not
used, connect it to the VSS pin if the logic type is “A” and to the VIN pin if it is “B”.
Table 7
Logic Type
ON/OFF Pin
Internal Circuits
VOUT Pin Voltage
Current Consumption
A
“L”: Power on
Operating
Set value
ISS1
A
“H”: Power off
Stopped
VSS level
ISS2
B
“L”: Power off
Stopped
VSS level
ISS2
B
“H”: Power on
Operating
Set value
ISS1
VSS
ON/OFF
VIN
Figure 14
Selection of Output Capacitor (CL)
The S-1131 Series performs phase compensation using the internal phase compensator in the IC and the ESR
(Equivalent Series Resistance) of the output capacitor to enable stable operation independent of changes in the
output load. Therefore, always place a capacitor (CL) of 2.2
μF or more between VOUT and VSS pins.
For stable operation of the S-1131 Series, it is essential to employ a capacitor whose ESR is within an optimum
range. Using a capacitor whose ESR is outside the optimum range (approximately 0.5 to 5
Ω), whether larger
or smaller, may cause an unstable output, resulting in oscillation.
For this reason, a tantalum electrolytic
capacitor is recommended.
When a ceramic capacitor or an OS capacitor with a low ESR is used, it is necessary to connect an additional
resistor that serves as the ESR in series with the output capacitor.
The required resistance value is
approximately 0.5 to 5
Ω, which varies depending on the usage conditions, so perform sufficient evaluation for
selection. Ordinarily, around 1.0
Ω is recommended.
Note that an aluminum electrolytic capacitor may increase the ESR at a low temperature, causing oscillation.
When using this kind of capacitor, perform thorough evaluation, including evaluation of temperature
characteristics.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| S-1132 | 制造商:SII 制造商全称:Seiko Instruments Inc 功能描述:HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR |
| S-1132A23-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 输出配置:正 输出类型:固定 稳压器数:1 电压 - 输入（最大值）:6.5V 电压 - 输出（最小值/固定）:2.3V 电压 - 输出（最大值）:- 压降（最大值）:0.23V @ 100mA 电流 - 输出:300mA 电流 - 静态（Iq):40μA PSRR:65dB（1kHz） 控制特性:使能 保护功能:过流 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-1132A33-U5T1U | 功能描述:CMOS VOLTAGE REGULATOR 制造商:ablic u.s.a. inc. 系列:- 包装:剪切带（CT） 零件状态:在售 输出配置:正 输出类型:固定 稳压器数:1 电压 - 输入（最大值）:6.5V 电压 - 输出（最小值/固定）:3.3V 电压 - 输出（最大值）:- 压降（最大值）:0.15V @ 100mA 电流 - 输出:300mA 电流 - 静态（Iq):40μA PSRR:65dB（1kHz） 控制特性:使能 保护功能:过流 工作温度:-40°C ~ 85°C（TA） 安装类型:表面贴装 封装/外壳:SOT-89-5/6 供应商器件封装:SOT-89-5 标准包装:1 |
| S-1132B15-I6T2G | 功能描述:低压差稳压器 - LDO Linear LDO reg Hi 20uA 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-1132B15-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 输出配置:正 输出类型:固定 稳压器数:1 电压 - 输入（最大值）:6.5V 电压 - 输出（最小值/固定）:1.5V 电压 - 输出（最大值）:- 压降（最大值）:0.58V @ 100mA 电流 - 输出:300mA 电流 - 静态（Iq):40μA PSRR:70dB（1kHz） 控制特性:使能 保护功能:过流 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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