LD56100
Datasheet
1 A very low dropout fast transient ultra-low noise linear regulator
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Input voltage from 1.8 to 5.5 V
Ultra-low dropout voltage (120 mV typ. at 1 A load and V
OUT
= 3.3 V)
Very low quiescent current (100 µA typ. at no-load, 0.03 µA typ. in off mode)
Output voltage tolerance: ± 1% from -40 °C to +85 °C
Ultra-low Noise: 13 µV RMS Noise from 10 Hz to 100 kHz at V
OUT
= 3.0 V
High PSRR (70 dB@1 kHz)
Wide range of output voltages available on request: from 1.0 V up to 5.0 V in 50
mV step
Logic-controlled electronic shutdown
Internal soft-start
Optional output voltage discharge feature
Compatible with ceramic capacitor C
OUT
= 1 µF
Internal current limit foldback and thermal protections
Available in DFN8 (1.2x1.6 mm)
Operating temperature range: -40 °C to 125 °C
Applications
•
•
•
•
Mobile phones
Tablets
Battery-powered systems
Camera supply
Maturity status link
LD56100
Description
The
LD56100
high accuracy voltage regulator provides 1 A of current from an input
voltage ranging from 1.8 V to 5.5 V, with a typical dropout voltage of 120 mV.
It is available in DFN8 (1.2 x 1.6 mm) package, allowing the maximum space saving.
The device is stabilized with a ceramic capacitor on the output. The ultra-low drop
voltage, low quiescent current and fast transient response, together with the internal
soft-start circuit, make the
LD56100
suitable for low power battery-operated
applications.
An enable logic control function puts the
LD56100
in shutdown mode allowing a total
current consumption lower than 0.1 µA. Short-circuit protection with current limit
foldback and thermal protection are also included.
DS12423
-
Rev 1
-
January 2018
For further information contact your local STMicroelectronics sales office.
www.st.com/
LD56100
Pin configuration
2
Pin configuration
Figure 2.
Pin connection (top view)
1
8
2
7
3
6
4
5
Table 1.
Pin description
Pin # DFN8
1
2
3
Symbol
V
OUT
V
OUT
LCON
Current limit selection.
High 1 A, low 0.5 A
4
5
6
7
8
Thermal pad
FB
GND
EN
V
IN
V
IN
GND
Connect to GND on the PCB
Feedback pin, to be connected as close
as possible to the load positive terminal
Common ground
Enable pin logic input: low = shutdown,
high = active
Input voltage
Function
Output voltage
DS12423
-
Rev 1
page 3/22
LD56100
Maximum ratings
4
Maximum ratings
Table 2.
Absolute maximum ratings
Symbol
V
IN
V
OUT
V
EN
, FB, LCON
I
OUT
P
D
T
STG
T
OP
Parameter
Input voltage
Output voltage
Enable and feedback input voltage
Output current
Power dissipation
Storage temperature range
Operating junction temperature range
Value
- 0.3 to 7
- 0.3 to V
IN
+ 0.3
- 0.3 to 7
Internally limited
Internally limited
- 40 to 150
- 40 to 125
Unit
V
V
V
mA
mW
°C
°C
Note:
Absolute maximum ratings are those values beyond which damage to the device may occur. Functional
operation under these conditions is not implied. All values are referred to GND.
Table 3.
Thermal data
Symbol
R
thJA
Parameter
Thermal resistance junction-ambient
Value
80
Unit
°C/W
Table 4.
ESD performance
Symbol
ESD
Parameter
ESD Protection voltage
Test conditions
HBM
CDM
Value
2
500
Unit
kV
V
DS12423
-
Rev 1
page 5/22
TI技术论坛
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
