LTC3025-3 LINER [Linear Technology], LTC3025-3 Datasheet

no-image

LTC3025-3

Manufacturer Part Number
LTC3025-3
Description
1A, 0.9V to 10V, Very Low Dropout Linear Regulator
Manufacturer
LINER [Linear Technology]
Datasheet
FEATURES
APPLICATIONS
TYPICAL APPLICATION
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
V
Dropout Voltage: 145mV Typical
Output Current: 1A
Adjustable Output (V
Fixed Output Voltages: 1.2V, 1.5V, 1.8V
Stable with Low ESR, Ceramic Output Capacitors
(10µF Minimum)
0.05% Typical Load Regulation from 1mA to 1A
Quiescent Current: 400µA Typical
7.5µA Typical Quiescent Current in Shutdown
Current Limit Protection
Reverse-Battery Protection with No Reverse Current
Thermal Limiting with Hysteresis
16-Lead (5mm × 3mm) DFN and MSOP Packages
High Efficiency Linear Regulators
Battery-Powered Systems
Logic Supplies
Post Regulator for Switching Supplies
Wireless Modems
FPGA Core Supplies
IN
Range: 0.9V to 10V
1.2V
V
IN
1.2V to 0.9V, 1A VLDO Regulator
10µF
IN
SHDN
REF
LT3022
GND
= V
OUT
ADJ
OUT(MIN)
698
1%
200
1%
3022 TA01a
= 200mV)
10µF
V
0.9V
1A
OUT
DESCRIPTION
The LT
regulator that operates from single input supplies down to
0.9V. The device supplies 1A output current with 145mV
typical dropout voltage. The LT3022 is ideal for low input
voltage to low output voltage applications, providing
comparable electrical efficiency to a switching regulator.
The regulator optimizes stability and transient response
with low ESR ceramic output capacitors as small as 10µF .
Other LT3022 features include 0.05% typical line regulation
and 0.05% typical load regulation. In shutdown, quiescent
current typically drops to 7.5µA. Internal protection circuitry
includes reverse-battery protection, current limiting, ther-
mal limiting with hysteresis and reverse-current protection.
The LT3022 is available as an adjustable device with
an output voltage range down to the 200mV reference.
Three fixed output voltages, 1.2V, 1.5V and 1.8V are also
offered. The LT3022 regulator is available in the thermally
enhanced low profile (0.75mm) 16-lead (5mm × 3mm)
DFN and MSOP packages.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. VLDO is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
®
3022 is a very low dropout voltage (VLDO™) linear
0.5
0.4
1.1
1.0
0.9
0.8
0.7
0.6
0.3
0.2
0.1
0
LT3022-1.5/LT3022-1.8
–50
–25
Minimum Input Voltage
Very Low Dropout
LT3022/LT3022-1.2
Linear Regulator
0
TEMPERATURE (°C)
1A, 0.9V to 10V,
25
50
75
100
I
L
3022 TA01b
= 1A
125
3022fb
1

Related parts for LTC3025-3

LTC3025-3 Summary of contents

Page 1

FEATURES V Range: 0.9V to 10V n IN Dropout Voltage: 145mV Typical n Output Current Adjustable Output ( REF OUT(MIN) Fixed Output Voltages: 1.2V, 1.5V, 1.8V n Stable with Low ESR, Ceramic Output Capacitors n ...

Page 2

LT3022/LT3022-1.2 LT3022-1.5/LT3022-1.8 ABSOLUTE MAXIMUM RATINGS IN Pin Voltage ........................................................ ±10V OUT Pin Voltage ..................................................... ±10V Input-to-Output Differential Voltage ....................... ±10V ADJ/SENSE Pin Voltage ......................................... ±10V SHDN Pin Voltage .................................................. ±10V Output Short-Circuit Duration ......................... Indefinite PIN CONFIGURATION TOP VIEW NC ...

Page 3

ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT3022EDHC#PBF LT3022EDHC#TRPBF LT3022IDHC#PBF LT3022IDHC#TRPBF LT3022EMSE#PBF LT3022EMSE#TRPBF LT3022IMSE#PBF LT3022IMSE#TRPBF LT3022EMSE-1.2#PBF LT3022EMSE-1.2#TRPBF 302212 LT3022IMSE-1.2#PBF LT3022IMSE-1.2#TRPBF LT3022EMSE-1.5#PBF LT3022EMSE-1.5#TRPBF 302215 LT3022IMSE-1.5#PBF LT3022IMSE-1.5#TRPBF LT3022EMSE-1.8#PBF LT3022EMSE-1.8#TRPBF 302218 LT3022IMSE-1.8#PBF LT3022IMSE-1.8#TRPBF LEAD BASED FINISH TAPE AND REEL LT3022EDHC LT3022EDHC#TR LT3022IDHC ...

Page 4

LT3022/LT3022-1.2 LT3022-1.5/LT3022-1.8 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T PARAMETER Minimum Input Voltage (Notes 4, 6) ADJ Pin Voltage (Notes 5, 6) Regulated Output Voltage (Note 5) Line Regulation (Note 7) Load Regulation (Note 7) Dropout Voltage (Notes ...

Page 5

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T PARAMETER Ripple Rejection (Note 13) Current Limit (Note 9) Input Reverse Leakage Current (Note 14) Reverse Output Current (Notes 15, 16) Minimum Required Output Current Note 1: Stresses beyond those listed ...

Page 6

LT3022/LT3022-1.2 LT3022-1.5/LT3022-1.8 TYPICAL PERFORMANCE CHARACTERISTICS Dropout Voltage 300 V = 1.2V OUT 270 240 210 T = 125°C J 180 150 T = 25°C J 120 –40° 100 200 300 400 500 ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS ADJ Pin Bias Current 100 – 100 –25 TEMPERATURE (°C) 3022 G06 Quiescent Current 5 1.5V OUT 4 ...

Page 8

LT3022/LT3022-1.2 LT3022-1.5/LT3022-1.8 TYPICAL PERFORMANCE CHARACTERISTICS GND Pin Current vs I LOAD 1. 1.2V 21 OUT V = 10V SHDN T = 25° 100 200 300 ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS Input Ripple Rejection 100 1.5V + 0.5V RIPPLE AT 120Hz IN P 0.5V OUT C = 10µF 10 OUT ...

Page 10

LT3022/LT3022-1.2 LT3022-1.5/LT3022-1.8 PIN FUNCTIONS NC (Pins 15, 16): No Connect Pins. These pins have no connection to internal circuitry. These pins may be floated, tied tied to GND for improved thermal IN performance. OUT ...

Page 11

BLOCK DIAGRAM SHDN SHUTDOWN 9 BIAS CURRENT AND REFERENCE GENERATOR NOTE: FOR LT3022 ADJ PIN (5) IS CONNECTED TO THE ADJ PIN, R1 AND R2 ARE EXTERNAL. FOR LT3022-1.X PIN (5) IS CONNECTED TO THE SENSE PIN, R1 AND R2 ...

Page 12

LT3022/LT3022-1.2 LT3022-1.5/LT3022-1.8 APPLICATIONS INFORMATION The LT3022 very low dropout linear regulator is capable of 0.9V input supply operation. It supplies 1A output current and dropout voltage is typically 145mV. Quiescent current is typically 400µA and drops to 7.5µA in shutdown. ...

Page 13

APPLICATIONS INFORMATION and are more suitable for use as the output capacitor at fractionally increased cost. X5R and X7R dielectrics both exhibit excellent voltage coefficient characteristics. X7R works over a larger temperature range and exhibits better temperature stability whereas X5R ...

Page 14

LT3022/LT3022-1.2 LT3022-1.5/LT3022-1.8 APPLICATIONS INFORMATION To eliminate this problem, the LT3022 incorporates a no-load or light load recovery circuit. This circuit is a voltage-controlled current sink that significantly improves the light load transient response time by discharging the output capacitor quickly ...

Page 15

APPLICATIONS INFORMATION Calculating Junction Temperature Example: Given an output voltage of 1.5V, an input voltage range of 1.7V to 1.9V, an output load current range of 1mA to 1A and a maximum ambient temperature of 85°C, what is the maximum ...

Page 16

LT3022/LT3022-1.2 LT3022-1.5/LT3022-1.8 APPLICATIONS INFORMATION In circuits where a backup battery is required, several different input/output conditions can occur. The output voltage may be held up while the input is either pulled to ground, pulled to some intermediate voltage or is ...

Page 17

PACKAGE DESCRIPTION 3.50 ±0.05 1.65 ±0.05 2.20 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS PIN 1 TOP MARK (SEE NOTE 6) 0.200 REF NOTE: 1. DRAWING PROPOSED TO BE MADE VARIATION OF VERSION (WJED-1) IN JEDEC PACKAGE OUTLINE ...

Page 18

LT3022/LT3022-1.2 LT3022-1.5/LT3022-1.8 PACKAGE DESCRIPTION 2.845 ± 0.102 (.112 ± .004) 5.23 (.206) MIN 0.305 ± 0.038 (.0120 ± .0015) TYP RECOMMENDED SOLDER PAD LAYOUT DETAIL “A” 0.254 (.010) GAUGE PLANE 0.18 (.007) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT ...

Page 19

REVISION HISTORY REV DATE DESCRIPTION A 9/10 Added -1.2, -1.5, and -1.8 fixed voltage options B 02/12 Revised Max value for Input Reverse Leakage Current Updated the 16-lead MSE package Information furnished by Linear Technology Corporation is believed to be ...

Page 20

... Low I : 54µA, 2mm × 2mm 6-Lead DFN Package 0.9V to 5.5V, Dropout Voltage: 75mV, Low Noise 80µV IN Low I : 54µA, Fixed Output: 1.2V (LTC3025-2), 1.5V (LTC3025-3), Q 1.8V (LTC3025-4); Adjustable Output Range: 0.4V to 3.6V (LTC3025-1), 2mm × 2mm 6-Lead DFN Package V : 1.14V to 3.5V (Boost Enabled), 1.14V to 5.5V (with External 5V ...

Related keywords