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參數(shù)資料
| 型號(hào)： | 935270480518 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 固定正電壓?jiǎn)温份敵鯨DO穩(wěn)壓器 |
| 英文描述： | 2.8 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO7 |
| 封裝： | SOP-7 |
| 文件頁(yè)數(shù)： | 2/8頁(yè) |
| 文件大?。?/td> | 73K |
| 代理商： | 935270480518 |
Philips Semiconductors
Product data
SA57022-XX
500 mA LDO with ON/OFF control and Vref bypass
2
2001 Oct 03
853–2293 27197
GENERAL DESCRIPTION
The SA57022-XX has an extremely precise fixed output with a
typical accuracy of
±2%. It is designed to provide very low dropout
and ultra low noise with an optional Bypass pin, and fast transient
response. Supply current is reduced to zero (typical).
The SA57022-XX incorporates both over-temperature and
over-current protection. The SA57022-XX is stable with an output
capacitor of only 1.0
F and has a maximum output current of
500 mA. It is available in the SOP-7B package.
FEATURES
Very low dropout voltage: 300 mV typ. (I
out = 500 mA)
High precision output voltage: ±2%
Output current capacity: 500 mA
Low noise: 75 V
rms typ. @ 20 Hz to 80 KHz, for Cn = 470 pF.
Extremely good line regulation: 10 mV typical
Extremely good load regulation: 20 mV typical
Low temperature drift co-efficient to V
out: ±100 ppm/°C
Internal current limit and thermal shut-down circuits
Input voltage range: –0.3 V to 12 V
Wide preset output voltage range: 1.8 V to 5 V
Wide operating temperature range: –40 °C to +85 °C
APPLICATIONS
Battery-operated systems
Portable computers
Cameras, VCRs and camcorders
PCMCIA cards, modems, pagers
Cellular/GSM/PHS phones
Linear post-regulator for SMPS
Instrumentation
SIMPLIFIED SYSTEM DIAGRAM
VIN
BYPASS
VOUT
GND
7
1
4
3
5
ON/OFF
R
CURRENT
LIMIT
REFERENCE
BIAS
DRIVER
THERMAL
SHUTDOWN
SL01527
Figure 1. Simplified system diagram.
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