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LDFM 데이터시트 PDF




STMicroelectronics에서 제조한 전자 부품 LDFM은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 LDFM 자료 제공

부품번호 LDFM 기능
기능 500 mA very low drop voltage regulator
제조업체 STMicroelectronics
로고 STMicroelectronics 로고


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LDFM 데이터시트, 핀배열, 회로
LDFM
500 mA very low drop voltage regulator
Datasheet - production data
Features
Input voltage from 2.5 to 16 V
Very low dropout voltage (300 mV max. at
500 mA load)
Low quiescent current (200 µA typ. @ 500
mA load)
Available in 1% precision in PPAK and
DFN6 packages, 2% in DPAK
500 mA guaranteed output current
Wide range of output voltages available on
request: adjustable from 0.8 V, fixed up to
12 V in 100 mV steps
Logic-controlled electronic shutdown
Power Good (PPAK and DFN packages)
Fast dynamic response to line and load
changes
Internal current and thermal protection
Temperature range: - 40 °C to 125 °C
Applications
PCs and laptop computers
Battery-powered equipment
Industrial and medical equipment
Portable equipment
Description
The LDFM is a fast, very low drop linear regulator
which operates from an input supply voltage in
the range of 2.5 V to 16 V.
It is available in fixed and adjustable output
voltage versions, from 0.8 V to 12 V.
The LDFM features high output precision, very
low dropout voltage, low noise, and low quiescent
current, therefore suitable for low voltage
microprocessors and memory applications.
Enable logic control pin and Power Good output
are featured on PPAK/DFN packages.
Current and thermal protection are provided.
September 2016
DocID023585 Rev 4
This is information on a product in full production.
1/36
www.st.com




LDFM pdf, 반도체, 판매, 대치품
Pin configuration
2 Pin configuration
Figure 2: Pin connection (top view)
LDFM
Pin n°
PPAK DPAK
5-
21
43
1-
32
TAB TAB
Table 1: Pin description DPAK, PPAK
Symbol
Function
ADJ/PG
VIN
VOUT
EN
GND
GND
For adjustable versions: error amplifier input pin.
For fixed version: Power Good output
Input voltage
Output voltage
Enable pin logic input: Low = shutdown, High = active
Ground
Ground
Pin n°
2
6
1
5
3
4
exposed
pad
Table 2: Pin description DFN6-2x2 and 3x3
Symbol
Function
ADJ/NC
For adjustable versions: error amplifier input pin. For fixed version: not
connected
VIN
VOUT
EN
Input voltage
Output Voltage
Enable pin logic input: low = shutdown, high = active
PG Power good output
GND Ground
GND Ground
4/36 DocID023585 Rev 4

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LDFM 전자부품, 판매, 대치품
LDFM
Electrical characteristics
5 Electrical characteristics
TJ = 25 °C, VIN = VOUT(NOM) + 1 Va, CIN = 1 µF, COUT = 2.2 µF, ILOAD = 10 mA, VEN = 2 V,
unless otherwise specified.
Symbol
Table 5: Electrical characteristics for LDFM (fixed versions)
Parameter
Test conditions
Min.
Typ.
Max. Unit
VIN
VOUT
VOUT
∆VOUT
∆VOUT
VDROP
IQ
ISC
VEN
IEN
PG
Operating input voltage
VOUT accuracy,
PPAK and DFN6
versions
VOUT accuracy,
DPAK version
Static line regulation
Static load regulation
Dropout voltage (2)
Quiescent current
Short-circuit current
Enable input logic low
Enable input logic high
Enable pin input current
Power Good output
threshold
VOUT+1 V≤ VIN≤ 16 V(1)
ILOAD = 10 mA
10 mA ≤ ILOAD≤ 500 mA
TJ = -40 to 125 °C
VOUT+1 V(1) ≤ VIN ≤ 16 V
ILOAD = 10 mA
10 mA ≤ ILOAD ≤ 500 mA
TJ = -40 to 125 °C
VOUT+1 V(1) ≤ VIN ≤ 16 V
VOUT+1 V(1) ≤ VIN ≤ 16 V,
TJ = -40 to 125 °C
10 mA ≤ ILOAD ≤ 500 mA
10 mA ≤ ILOAD ≤ 500 mA,
TJ = -40 to 125 °C
10 mA ≤ ILOAD ≤ 500 mA,
TJ = -40 to 125 °C
DFN6 version
ILOAD = 500 mA,
-40 °C < TJ < 125 °C
ON mode: VEN = 2 V
ILOAD= 10 mA to 500 mA,
TJ = -40 to 125 °C
OFF Mode:VEN = GND,
PPAK and DFN versions
OFF Mode:VEN = GND,
PPAK and DFN versions,
-40 °C < TJ < 125 °C
VIN = 2.5 V to 16 V,
-40 °C<TJ<125 °C
VEN = VIN
Rising edge
2.5 16 V
-1 1 %
-1.5 1.5 %
-2 2 %
-3 3 %
0.01
0.04
%/V
0.1
0.15
%/A
0.4
10 mV
125 300 mV
200 800
30 µA
120
0.8 A
0.8
V
2
5 10 µA
0.92*
VOUT
V
a For VOUT < 1.5 V; VIN = 2.5 V.
DocID023585 Rev 4
7/36

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