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FAN1951D25X の電気的特性と機能

FAN1951D25XのメーカーはFairchild Semiconductorです、この部品の機能は「1.5A Low-Voltage Low-Dropout Regulator」です。


製品の詳細 ( Datasheet PDF )

部品番号 FAN1951D25X
部品説明 1.5A Low-Voltage Low-Dropout Regulator
メーカ Fairchild Semiconductor
ロゴ Fairchild Semiconductor ロゴ 




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FAN1951D25X Datasheet, FAN1951D25X PDF,ピン配置, 機能
www.fairchildsemi.com
FAN1950/FAN1951
1.5A Low-Voltage Low-Dropout Regulator
Features
• 1.5A minimum guaranteed output current
• 500mV maximum dropout at 1.5A
Ideal for 2.5V to 1.8V or 1.65V conversion
Ideal for 3.0V to 2.5V conversion
• Current Limiting and Thermal shutdown
• External Shut-down control (FAN1951 only)
• Error flag output (FAN1951 only)
• Fast transient response
• Low ground current
Applications
• General purpose conversion for low-voltage CPUs,
DSP and FPGAs
• SMPS post regulator
• Cable/Satellite set-top boxes
• PCI Graphics adapter cards
General Description
The FAN1950 and FAN1951 are 1.5A low-dropout linear
regulators that provide a low voltage, high current output
with a minimum of external components. Both of these
devices use a PNP output pass element achieving a maxi-
mum 500mV dropout at 1.5A load current. In addition these
devices offer overcurrent limit and thermal shutdown
features to ensure full protection.
The FAN1951 offers a logic level enable pin and an error
flag output to indicate undervoltage and over-current condi-
tions. 1.8V and 2.5V fixed output versions are available.
3.3V, 1.65V and 1.5V options are available upon request.
Typical Application
FAN1950-2.5V
FAN1951-1.8V
3.0V
2.5V
IN OUT
GND
10µF
2.5V IN OUT
100K
Error Output
On/Off
FLAG
EN
GND
1.8V
10µF
REV. 0.1.6 8/30/04

1 Page





FAN1951D25X pdf, ピン配列
FAN1950/FAN1951
Absolute Maximum Ratings
Absolute maximum ratings are the values beyond which the device may be damaged or have its useful life impaired.
Functional operation under these conditions is not implied.
Parameter
Supply Voltage: IN
Enable Voltage: EN
FLAG voltage: FLAG
Junction Temperature (TJ)
Storage Temperature
Lead Soldering Temperature, 10 seconds
Power Dissipation (PD)
Min.
-0.2
-0.2
-0.2
–55
–65
Typ.
Max.
15
15
15
150
150
300
Internally
Limited
Units
V
V
V
°C
°C
°C
W
Recommended Operating Conditions
Parameter
Supply Voltage
Package Thermal Resistance (θJC)
Junction Operating Temperature
Conditions
TO-252
Min.
2.25
-40
Typ.
3
Max.
14
125
Units
V
°C/W
°C
Electrical Specifications
(VIN = VOUT + 1V, VEN = 2.5V, Tj = +25°C unless specified otherwise)
The • denotes specifications which apply over the full operating temperature range.
Parameter
Output Voltage (VOUT) Tolerance
Line Regulation1,2
Load Regulation1,2
Dropout Voltage3
Conditions
10mA IOUT 1.0A,
10mA IOUT 1.5A,
VOUT + 1V VIN 8V
IOUT = 10mA, VOUT + 1V VIN 14V
VIN = VOUT + 1V,
10mA IOUT 1.5A
IOUT = 1.5A, VOUT = -1%
Ground Current
Minimum Load Current
Current Limit
EN Input Voltage (FAN1951 only)
EN Input Current (FAN1951 only)
FLAG Threshold Voltage
(FAN1951 only)
FLAG Output Leakage Current4
(FAN1951 only)
FLAG Output-Low Voltage
(FAN1951 only)
IOUT = 750mA
IOUT = 1.5A
VOUT + 1V VIN 8V
VOUT = 0V, VIN = VOUT + 1V
VIH (On)
VIL (Off)
IIH, VEN = 2.25V
IIL, VEN = 0.8V
Low threshold, % VOUT
High threshold, % VOUT
Hysteresis
VFLAG = 14V
IOL = 250µA
Min.
• -2
• -2.5
• 2.25
Typ.
.06
0.2
350
10
20
5
2.5
93
1
Max.
2
2.5
Units
%
0.5 %
1%
mV
500
20 mA
mA
10 mA
A
V
0.8 V
30 µA
4 µA
%
99.2 %
%
2 µA
400 mV
REV. 0.1.6 8/30/04
3


3Pages


FAN1951D25X 電子部品, 半導体
FAN1950/FAN1951
Typical Performance Characteristics (continued)
30.00
Ground Current vs. Temperature
Vin = 3V
25.00
20.00
IGND_ @ 1.5A
15.00
10.00
IGND @ 750mA
5.00
0.00
-50
IGND_@10mA
0
50
100
Temperature (C)
150
FAN1950D18 Short-Circuit Recovery Response
FAN1950D18 Short-Circuit Transient Response
Vin = 3V, Vout = 1.8V
Ch.1 – Vout (1V/div) Ch.2 – Load Current (2A/div)
FAN1950D25 Short-Circuit Recovery Response
Vin = 3V, Vout = 1.8V
Ch.1 – Vout (1V/div) Ch.2 – Load Current (2A/div)
FAN1950D25 Short-Circuit Transient Response
Vin = 3V, Vout = 2.5V
Ch.1 – Vout (1V/div) Ch.2 – Load Current (2A/div)
Vin = 3V, Vout = 2.5V
Ch.1 – Vout (1V/div) Ch.2 – Load Current (2A/div)
6 REV. 0.1.6 8/30/04

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
FAN1951D25X

1.5A Low-Voltage Low-Dropout Regulator

Fairchild Semiconductor
Fairchild Semiconductor


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