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参数资料
| 型号： | NCP1550SN19T1G |
| 厂商： | ON Semiconductor |
| 文件页数： | 2/17页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 5TSOP |
| 产品变化通告： | Product Obsolescence 01/Jul/2009 |
| 标准包装： | 1 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 690kHz |
| 占空比： | 100% |
| 电源电压： | 2.45 V ~ 5.5 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 6-TSOP（0.059"，1.50mm 宽）5 引线 |
| 包装： | 剪切带 (CT) |
| 其它名称： | NCP1550SN19T1GOSCT |
NCP1550
CP1
+
?
UVLO
5
V IN
?
PWM
Controller
2.2 V
+
V OUT
3
T ON t
T ON(PFM)
600 kHz
Oscillator
A1
GND
2
M1
?
+
Voltage Reference
and Soft?Start
Driver
4
1
EXT
CE
Figure 1. Simplified Block Diagram
PIN FUNCTION DESCRIPTIONS
Pin
1
2
3
4
5
Symbol
CE
GND
V OUT
EXT
V IN
Description
Chip Enable pin, active high (internal pullup current source). By connecting this pin to GND, the switching operation
of the controller will be stopped.
Ground Connection
Output voltage monitoring input. This pin must be connected to the regulated output node as a feedback to on?chip
control circuitry. V OUT is internally connected to the on?chip voltage divider that determines the output voltage level.
Gate drive for external P?MOSFET
Power supply input
MAXIMUM RATINGS (T A = 25 ° C unless otherwise noted)
Device Power Supply, V IN (Pin 5)
Input/Output Pins
CE (Pin 1)
V OUT (Pin 3)
EXT (Pin 4)
Thermal Characteristics
Rating
Symbol
V IN
V CE
V OUT
V EXT
R q JA
Value
?0.3 to 6.0
?0.3 to 6.0
?0.3 to 6.0
?0.3 to 6.0
250
Unit
V
V
° C/W
TSOP?5 Plastic Package, Case 483?01
Thermal Resistance, Junction?to?Air
Operating Junction Temperature Range
Operating Ambient Temperature Range
Storage Temperature Range
T J
T A
T stg
?40 to +150
?40 to +85
?55 to +150
° C
° C
° C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
NOTE: ESD data available upon request.
1. This device series contains ESD protection and exceeds the following tests:
Human Body Model (HBM) $ 2.0 kV per JEDEC standard: JESD22?A114.
Machine Model (MM) $ 200V per JEDEC standard: JESD22?A115.
2. Latchup Current Maximum Rating: 150 mA per JEDEC standard: JESD78.
3. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: J?STD?020A.
http://onsemi.com
2
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| NCP1550SN25T1 | 功能描述:直流/直流开关转换器 1.8V 2A Buck PWM/PFM 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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| NCP1550SN27T1G | 功能描述:直流/直流开关转换器 1.8V 2A Buck PWM/PFM w/Enable Soft Start 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 |
| NCP1550SN30T1 | 功能描述:直流/直流开关转换器 1.8V 2A Buck PWM/PFM 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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