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參數(shù)資料
| 型號(hào)： | LT1573 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Low Dropout PNP Regulator Driver(低壓差PNP穩(wěn)壓驅(qū)動(dòng)器) |
| 中文描述： | 低壓差穩(wěn)壓器驅(qū)動(dòng)進(jìn)步黨（進(jìn)步黨低壓差穩(wěn)壓驅(qū)動(dòng)器） |
| 文件頁(yè)數(shù)： | 1/16頁(yè) |
| 文件大小： | 204K |
| 代理商： | LT1573 |
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1
LT1573
Low Dropout
PNP Regulator Driver
Figure 1. 3.3V, 5A Microprocessor Supply
I
Low Cost Solution for High Current, Low Dropout
Regulators
I
Fast Transient Response Needs Much Less
Bulk Capacitance
I
Latching Overload Protection Minimizes
Heat Sink Size
I
Precision Output Voltage (1%)
I
Single Supply Operation: V
IN
= 2.8V to 10V
I
Small Surface Mount Package
I
Capable of Very Low Dropout Voltage (<0.2V)
I
Fixed or Adjustable Outputs
I
Shutdown
I
3.3V to 2.5V Regulators
I
Microprocessor Power Sources
I
Post Regulator for Switching Supplies
I
High Efficiency Linear Regulators
I
Ultralow Dropout Regulators
I
Low Voltage Linear Regulators
The LT
1573 is a regulator driver IC designed to provide
a low cost solution for applications requiring high current,
low dropout and fast transient response. When combined
with an external PNP power transistor, this device pro-
vides load current up to 5A with dropout voltages as low
as 0.35V. The LT1573 circuitry is designed for extremely
fast transient response. This greatly reduces bulk storage
capacitance when the regulator is used in applications
with fast, high current load transients.
To keep cost and complexity low, the LT1573 uses a new
time-delayed latching overcurrent protection technique
that requires no external current sense resistor. Base drive
is limited for instantaneous protection, and a time-delayed
latch protects the regulator from continuous short
circuits.
The LT1573 is available as an adjustable regulator with an
output range of 1.27V to 6.8V and with fixed output
voltages of 2.5V, 2.8V and 3.3V. Output accuracy is better
than 1% to meet the critical regulation requirement of fast
microprocessors. A special 8-pin, fused-lead surface mount
package is used to minimize regulator footprint and pro-
vide adequate heat sinking.
, LTC and LT are registered trademarks of Linear Technology Corporation.
COMP
V
OUT
V
IN
DRIVE
FB
LATCH
SHDN
GND
LT1573
+
C
TIME
C
OUT2
220
μ
F
TANT
C
OUT1
1
μ
CER
×
24
C
100pF
V
IN
5V
R
C
1k
R
D
24
V
3.3V
GND
1573 F01
R
B
50
R1
1.6k
R2
1k
LOAD
+
+
Q
MOTOROLA
D45H11
V
= 1.265V (1 + R1/R2)
FOR T < 45
°
C, C
OUT1
= 24
×
1
μ
F Y5V CERAMIC SURFACE MOUNT CAPACITORS.
FOR T > 45
°
C, C
= 24
×
1
μ
F X7R CERAMIC SURFACE MOUNT CAPACITORS.
PLACE C
OUT1
IN THE MICROPROCESSOR SOCKET CAVITY
C
IN
100
μ
F
TANT
Transient Response for
0.2A to 5A Output Load Step
10
μ
s/DIV
1573 F01a
50mV/DIV
2.5A/DIV
FEATURES
DESCRIPTIOU
APPLICATIU
TYPICAL APPLICATIO
U
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT-1573-111-024 | 制造商:Carling Technologies 功能描述:LT-SERIES TOGGLE SWITCH - Bulk |
| LT1573C | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Low Dropout PNP Regulator Driver |
| LT1573CS8 | 功能描述:IC REG CTRLR SGL POS ADJ 8-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性晶體管驅(qū)動(dòng)器 系列:- 產(chǎn)品培訓(xùn)模塊:More Information on LDOs 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:正，固定式 輸出數(shù):2 輸出電壓:2.8V，3.3V 電流 - 電源:12mA 輸入電壓:5 V ~ 22 V 工作溫度:0°C ~ 70°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
| LT1573CS8#PBF | 功能描述:IC REG CTRLR SGL POS ADJ 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性晶體管驅(qū)動(dòng)器 系列:- 產(chǎn)品培訓(xùn)模塊:More Information on LDOs 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:正，固定式 輸出數(shù):2 輸出電壓:2.8V，3.3V 電流 - 電源:12mA 輸入電壓:5 V ~ 22 V 工作溫度:0°C ~ 70°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
| LT1573CS8#TR | 功能描述:IC REG CTRLR SGL POS ADJ 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性晶體管驅(qū)動(dòng)器 系列:- 產(chǎn)品培訓(xùn)模塊:More Information on LDOs 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:正，固定式 輸出數(shù):2 輸出電壓:2.8V，3.3V 電流 - 電源:12mA 輸入電壓:5 V ~ 22 V 工作溫度:0°C ~ 70°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
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