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부품번호 | A4770 기능 |
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기능 | POWER SWITCH | ||
제조업체 | AiT Semiconductor | ||
로고 | |||
AiT Semiconductor Inc.
www.ait-ic.com
A4770
POWER SWITCH
100mΩ POWER DISTRIBUTION
DESCRIPTION
The A4770 is an integrated 100mΩ power switch
for self-powered and bus-powered Universal Series
Bus (USB) applications. A built-in charge pump is
used to drive the N-channel NMOSFET that is free
of parasitic body diode to eliminate any reversed
current flow across the switch when it is powered
off. Its low quiescent supply current (23μA) and
small package (SOT-25) is particularly suitable in
battery-powered portable equipment.
FEATURES
100mΩ Typ. High-Side NMOSFET (SOT-25)
Guaranteed 1.1A Continuous Current
1.5A Current Limit
Small SOT-25 Package Minimizes Board Space
Soft Start
Thermal Protection
Low 23uA Supply Current
Wide Input Voltage Range: 2.2V ~ 6V
Available in SOT-25 Package
Several protection functions include soft start to
limit inrush current during plug-in, current limiting at
1.5A to meet USB power requirement, and thermal
shutdown to protect damage under over current
conditions.
The A4770 is available in SOT-25 package.
APPLICATION
Battery-Powered Equipment
Motherboard USB Power Switch
USB Device Power Switch
Hot-Plug Power Supplies
Battery-Charger Circuits
ORDERING INFORMATION
TYPICAL APPLICATION
Package Type
Part Number
SOT-25
A4770E5R
E5
A4770E5VR
Note
R: Tape & Reel,
V: Green Package
AiT provides all Pb free products
Suffix “ V “ means Green Package
REV1.0
- JUL 2011 RELEASED -
-1-
AiT Semiconductor Inc.
www.ait-ic.com
A4770
POWER SWITCH
100mΩ POWER DISTRIBUTION
ELECTRICAL CHARACTERISTICS
VIN = 5V, CIN = COUT = 1μF, TA = 25°C, unless otherwise specified.
Parameter
Symbol
Conditions
Input Voltage Range
V IN
Output NMOFET RDS(ON)
R DS(ON)
IL = 1A
Supply Current
VIN = 3V
-
VIN = 5V
Output Turn-On Rising
Time
TR RL = 10Ω, 90% Settling
Current Limit Threshold
ILIMIT RL = 2Ω
Short-circuit Fold Back
Current
VOUT = 0V, measured prior to
IOS
thermal shutdown
CE Input High Threshold
-
CE Input Low Threshold
-
Shutdown Supply Current
IOFF CE = “0”
Output Leakage Current
ILEAKAGE CE = “0”, VOUT = 0V
VIN Under Voltage Lockout
UVLO
VIN Under Voltage
Hysteresis
-
Thermal Limit
TSD
Thermal Limit Hysteresis
ΔTSD
Min. Typ. Max. Unit
2.2 -
6V
- 100 130 mΩ
- 19 40
μA
- 23 45
- 1000 -
μS
1.1 1.5
2
A
- 1.0 -
A
2.0 -
-V
- - 0.8 V
- 0.1 1 μA
- 0.5 10 μA
1.3 1.8
-
V
- 100 - mV
- 130 -
- 20 -
°C
°C
REV1.0
- JUL 2011 RELEASED -
-4-
4페이지 AiT Semiconductor Inc.
www.ait-ic.com
A4770
POWER SWITCH
100mΩ POWER DISTRIBUTION
13. Shutdown Supply Current vs. Temperature
14. Turn-Off Leakage Current vs. Temperature
15. UVLO Threshold vs. Temperature
16. Inrush Current Response
17. Turn-On Response
18. Turn-Off Response
REV1.0
- JUL 2011 RELEASED -
-7-
7페이지 | |||
구 성 | 총 15 페이지수 | ||
다운로드 | [ A4770.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
A4770 | POWER SWITCH | AiT Semiconductor |
A4771 | 1A CURRENT LIMITED LOAD SWITCH | AiT Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |