lt3020edd668-1.5 Linear Technology Corporation, lt3020edd668-1.5 Datasheet

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lt3020edd668-1.5

Manufacturer Part Number
lt3020edd668-1.5
Description
100ma, Low Voltage, Very Low Dropout Linear Regulator
Manufacturer
Linear Technology Corporation
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 1mA 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% typical
line regulation and 0.2% typical load regulation. In shut-
down, quiescent current 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.
All other trademarks are the property of their respective owners.
, 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
TM
) linear
3020fc
1

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lt3020edd668-1.5 Summary of contents

Page 1

... 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. , LTC and LT 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. ...

Page 2

LT3020/LT3020-1.2/ LT3020-1.5/LT3020-1 ABSOLUTE AXI U RATI GS IN Pin Voltage ........................................................ ±10V OUT Pin Voltage .................................................... ±10V Input-to-Output Differential Voltage ....................... ±10V ADJ Pin Voltage .................................................... ±10V SHDN Pin Voltage ................................................. ±10V Output Short-Circut Duration .......................... Indefinite ...

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 Typical Dropout Voltage 250 225 200 T = 125°C J 175 150 125 T = 25°C J 100 100 ...

Page 6

LT3020/LT3020-1.2/ LT3020-1.5/LT3020-1 TYPICAL PERFOR A CE CHARACTERISTICS Quiescent Current 1000 V OUT = 1.5V (LT 3020-1.5) 900 25°C J 800 700 600 500 400 300 200 SHDN IN 100 ...

Page 7

W U TYPICAL PERFOR A CE CHARACTERISTICS Current Limit 500 OUT 450 400 V = 10V IN 350 V = 1.7V 300 IN 250 200 150 100 –50 – 100 ...

Page 8

LT3020/LT3020-1.2/ LT3020-1.5/LT3020-1 TYPICAL PERFOR A CE CHARACTERISTICS RMS Output Noise vs Load Current (10Hz to 100kHz) 300 V = 1.2V OUT C = 2.2µF OUT 250 200 150 100 50 0 0.01 0.1 LOAD CURRENT (mA ...

Page 9

W BLOCK DIAGRA SHDN SHUTDOWN (5) 200mV BIAS CURRENT AND REFERENCE GENERATOR 212mV NOTE: FOR LT3020 ADJUST PIN 3 IS CONNECTED TO THE ADJUST PIN, R1 AND R2 ARE EXTERNAL. FOR LT3020-1.X PIN 3 IS CONNECTED TO THE OUTPUT SENSE ...

Page 10

LT3020/LT3020-1.2/ LT3020-1.5/LT3020-1 APPLICATIO S I FOR ATIO an output current change of 1mA to 100mA is typically 0.4mV 200mV 1.5V, load regulation is: ADJ OUT (1.5V/200mV) • (0.4mV) = 3mV Output Capacitance ...

Page 11

U U APPLICATIO S I FOR ATIO response to light tapping from a pencil. Similar vibration induced behavior can masquerade as increased output voltage noise. No-Load/Light-Load Recovery A possible transient load step that occurs is where the output current changes ...

Page 12

LT3020/LT3020-1.2/ LT3020-1.5/LT3020-1 APPLICATIO S I FOR ATIO Table 2. Measured Thermal Resistance for MS8 Package COPPER AREA TOPSIDE* BACKSIDE BOARD AREA (JUNCTION-TO-AMBIENT 2500mm 2500mm 2500mm 1000mm 2500mm 2500mm 225mm ...

Page 13

U U APPLICATIO S I FOR ATIO and the output voltage clamps at a Schottky diode above ground. Please note that the behavior described above applies to the LT3020 only resistor divider is con- nected under the same ...

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 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS PIN 1 TOP MARK (NOTE 6) 0.200 REF Package 8-Lead Plastic DFN (3mm × 3mm) (Reference ...

Page 15

... LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 16

... Stable with 1µF Output Capacitor, Exposed RMS = 0.4V 0.05V 54µA, Stable with OUT(MIN 1.23V Set by External MOSFET OUT(MIN) DO LT/LT 0905 REV C • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2004 < 1µA, < 1µA, < 1µA, < 1µA, < 1µA, = 3µA, SD 3020fc ...

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