LTAGL LINER [Linear Technology], LTAGL Datasheet

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LTAGL

Manufacturer Part Number
LTAGL
Description
100mA, Low Voltage, Very Low Dropout Linear Regulator
Manufacturer
LINER [Linear Technology]
Datasheet
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
V
Minimum Input Voltage: 0.9V
Dropout Voltage: 150mV Typical
Output Current: 100mA
Adjustable Output (V
Fixed Output Voltages: 1.2V, 1.5V, 1.8V
Stable with Low ESR, Ceramic Output Capacitors
(2.2µF Minimum)
0.2% Load Regulation from 0mA to 100mA
Quiescent Current: 120µA (Typ)
3µA Typical Quiescent Current in Shutdown
Current Limit Protection
Reverse-Battery Protection
No Reverse Current
Thermal Limiting with Hysteresis
8-Lead DFN (3mm × 3mm) and MSOP Packages
Low Current Regulators
Battery-Powered Systems
Cellular Phones
Pagers
Wireless Modems
IN
1.8V
Range: 0.9V to 10V
V
IN
1.8V to 1.5V, 100mA VLDO Regulator
2.2µF
U
IN
SHDN
REF
LT3020-1.5
GND
= V
OUT
OUT(MIN)
U
3020 TA01
= 200mV)
2.2µF
V
1.5V
100mA
OUT
DESCRIPTIO
The LT
regulator that operates from input supplies down to 0.9V.
This device supplies 100mA of output current with a
typical dropout voltage of 150mV. The LT3020 is ideal for
low input voltage to low output voltage applications,
providing comparable electrical efficiency to that of a
switching regulator.
The LT3020 regulator optimizes stability and transient
response with low ESR, ceramic output capacitors as
small as 2.2µF. Other LT3020 features include 0% line
regulation and 0.2% typical load regulation. In shutdown,
quiescent current typically drops to 3µA.
Internal protection circuitry includes reverse-battery pro-
tection, current limiting, thermal limiting with hysteresis,
and reverse-current protection. The LT3020 is available as
an adjustable output device with an output range down to
the 200mV reference. Three fixed output voltages, 1.2V,
1.5V and 1.8V, are also available.
The LT3020 regulator is available in the low profile
(0.75mm) 8-lead (3mm × 3mm) DFN package with ex-
posed pad and the 8-lead MSOP package.
VLDO is a trademark of Linear Technology Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
®
3020 is a very low dropout voltage (VLDO
100mA, Low Voltage,
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–50
I
L
LT3020-1.5/LT3020-1.8
= 100mA
–25
Very Low Dropout
Minimum Input Voltage
U
LT3020/LT3020-1.2/
Linear Regulator
0
TEMPERATURE (°C)
25
50
75
100
3020 TA02
125
sn3020 3020fas
TM
) linear
1

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LTAGL Summary of contents

Page 1

FEATURES ■ V Range: 0.9V to 10V IN ■ Minimum Input Voltage: 0.9V ■ Dropout Voltage: 150mV Typical ■ Output Current: 100mA ■ Adjustable Output ( REF OUT(MIN) ■ Fixed Output Voltages: 1.2V, 1.5V, 1.8V ■ Stable with ...

Page 2

... ORDER PART NUMBER LT3020EMS8 OUT 1 OUT 2 OUT 3 GND 4 MS8 PACKAGE MS8 PART MARKING 8-LEAD PLASTIC MSOP T = 150°C, θ JMAX LTAGL SEE THE APPLICATIONS INFORMATION SECTION ORDER PART NUMBER TOP VIEW LT3020EDD-1 LT3020EDD-1 LT3020EDD-1 SHDN DD8 PART MARKING ...

Page 3

ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T PARAMETER CONDITIONS Minimum Input Voltage (Note 14 100mA, T LOAD I = 100mA, T LOAD ADJ Pin Voltage (Notes 4, ...

Page 4

LT3020/LT3020-1.2/ LT3020-1.5/LT3020-1.8 ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T PARAMETER CONDITIONS Current Limit (Note 12 10V OUT(NOMINAL) Input Reverse Leakage Current ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS ADJ Pin Voltage 206 I = 1mA L 204 202 200 198 196 194 –50 – 100 125 TEMPERATURE (°C) 3020 G04 Output Voltage 1.230 I = 1mA L ...

Page 6

LT3020/LT3020-1.2/ LT3020-1.5/LT3020-1 TYPICAL PERFOR A CE CHARACTERISTICS GND Pin Current 2500 V OUT = 1.5V (LT 3020-1.5) 2250 T = 25°C J 2000 R = 15Ω L 1750 I = 100mA L 1500 1250 R = 30Ω L ...

Page 7

W U TYPICAL PERFOR A CE CHARACTERISTICS Input Ripple Rejection 100 1.5V + 0.5V RIPPLE 120Hz IN P 0.5V 10 OUT I = 100mA L ...

Page 8

LT3020/LT3020-1.2/ LT3020-1.5/LT3020-1 CTIO S OUT (Pins 1, 2): These pins supply power to the load. Use a minimum output capacitor of 2.2µF to prevent oscillations. Applications with large load transients require larger out- put capacitors ...

Page 9

U U APPLICATIO S I FOR ATIO The LT3020 is a very low dropout linear regulator capable of 1V input supply operation. Devices supply 100mA of output current and dropout voltage is typically 150mV. Quiescent current is typically 120µA and ...

Page 10

LT3020/LT3020-1.2/ LT3020-1.5/LT3020-1 APPLICATIO S I FOR ATIO 20 BOTH CAPACITORS ARE 16V, 1210 CASE SIZE, 10µF 0 X5R –20 –40 –60 Y5V –80 –100 BIAS VOLTAGE (V) Figure 2. Ceramic ...

Page 11

U U APPLICATIO S I FOR ATIO The LT3020 regulator has internal thermal limiting (with hysteresis) designed to protect the device during overload conditions. For normal continuous conditions, do not exceed the maximum junction temperature rating of 125°C. Carefully consider ...

Page 12

LT3020/LT3020-1.2/ LT3020-1.5/LT3020-1 APPLICATIO S I FOR ATIO The LT3020 incurs no damage if OUT is pulled below ground left open circuit or grounded, OUT can be pulled below ground by 10V. No current flows from ...

Page 13

U U APPLICATIO S I FOR ATIO If the LT3020 is powered by a battery mounted in close proximity on the same circuit board, a 2.2µF input capaci- tor is sufficient for stability. However, if the LT3020 is powered by ...

Page 14

LT3020/LT3020-1.2/ LT3020-1.5/LT3020-1.8 PACKAGE DESCRIPTIO 3.5 ±0.05 1.65 ±0.05 2.15 ±0.05 (2 SIDES) 0.25 ± 0.05 0.50 BSC 2.38 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS Package 8-Lead Plastic DFN (3mm × 3mm) (Reference LTC DWG ...

Page 15

PACKAGE DESCRIPTIO 0.889 ± 0.127 (.035 ± .005) 5.23 3.20 – 3.45 (.206) (.126 – .136) MIN 0.65 0.42 ± 0.038 (.0256) (.0165 ± .0015) BSC TYP RECOMMENDED SOLDER PAD LAYOUT NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO ...

Page 16

LT3020/LT3020-1.2/ LT3020-1.5/LT3020-1.8 RELATED PARTS PART NUMBER DESCRIPTION LT1121/LT1121HV 150mA, Micropower LDOs LT1129 700mA, Micropower LDO LT1761 100mA, Low Noise Micropower LDO LT1762 150mA, Low Noise Micropower LDO LT1763 500mA, Low Noise Micropower LDO LT1764/LT1764A 3A, Low Noise, Fast Transient Response ...

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