LT3021ES8-1.2 Linear Technology, LT3021ES8-1.2 Datasheet

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LT3021ES8-1.2

Manufacturer Part Number
LT3021ES8-1.2
Description
IC,VOLT REGULATOR,FIXED,+1.2V,BIPOLAR,SOP,8PIN,PLASTIC
Manufacturer
Linear Technology
Datasheet

Specifications of LT3021ES8-1.2

Rohs Compliant
NO

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Part Number:
LT3021ES8-1.2#PBF
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APPLICATIO S
FEATURES
TYPICAL APPLICATIO
Low Current Regulators
Battery-Powered Systems
Cellular Phones
Pagers
Wireless Modems
V
Dropout Voltage: 160mV Typical
Output Current: 500mA
Adjustable Output (V
Fixed Output Voltages: 1.2V, 1.5V, 1.8V
Stable with Low ESR, Ceramic Output Capacitors
(3.3µF Minimum)
0.2% Load Regulation from 0mA to 500mA
Quiescent Current: 120µA (Typ)
3µA Typical Quiescent Current in Shutdown
Current Limit Protection
Reverse-Battery Protection
No Reverse Current
Thermal Limiting with Hysteresis
16-Pin DFN (5mm × 5mm) and 8-Lead
SO Packages
IN
1.8V
Range: 0.9V to 10V
V
IN
1.8V to 1.5V, 500mA VLDO Regulator
3.3µF
U
IN
SHDN
REF
LT3021-1.5
GND
= V
SENSE
OUT
OUT(MIN)
U
3021 TA01
= 200mV)
3.3µF
V
1.5V
500mA
OUT
DESCRIPTIO
The LT
regulator that operates from input supplies down to 0.9V.
This device supplies 500mA of output current with a
typical dropout voltage of 160mV. The LT3021 is ideal for
low input voltage to low output voltage applications,
providing comparable electrical efficiency to that of a
switching regulator.
The LT3021 regulator optimizes stability and transient
response with low ESR, ceramic output capacitors as
small as 3.3µF. Other LT3021 features include 0.05%
typical 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 LT3021 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 LT3021 regulator is available in the low profile
(0.75mm) 16-pin (5mm × 5mm) DFN package with ex-
posed pad and the 8-lead SO package.
is a trademark of Linear Technology Corporation. All other trademarks are the property of
their respective owners.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. VLDO
®
3021 is a very low dropout voltage (VLDO
500mA, 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
LT3021-1.5/LT3021-1.8
I
L
= 500mA
Very Low Dropout
–25
U
Minimum Input Voltage
LT3021/LT3021-1.2/
Linear Regulator
0
TEMPERATURE (°C)
25
50
75
100
3021 TA02
125
TM
) linear
3021fb
1

Related parts for LT3021ES8-1.2

LT3021ES8-1.2 Summary of contents

Page 1

... The LT3021 regulator is available in the low profile (0.75mm) 16-pin (5mm × 5mm) DFN package with ex- posed pad and the 8-lead SO package. , LT, LTC and LTM 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. 1.1 1.0 ...

Page 2

... THE APPLICATIONS INFORMATION SECTION **MEASURED JUNCTION TO PIN 6 ORDER PART DH PART NUMBER MARKING LT3021EDH 3021 ORDER PART DH PART NUMBER MARKING LT3021EDH-1.2 302112 LT3021EDH-1.5 302115 LT3021EDH-1.8 302118 ORDER PART S8 PART NUMBER MARKING 3021 LT3021ES8 ORDER PART S8 PART NUMBER MARKING LT3021ES8-1.2 302112 LT3021ES8-1.5 302115 LT3021ES8-1.8 302118 3021fb ...

Page 3

ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T PARAMETER CONDITIONS Minimum Input Voltage I = 500mA, T LOAD (Notes 5,14 500mA, T LOAD ADJ Pin Voltage (Notes 4, ...

Page 4

LT3021/LT3021-1.2/ LT3021-1.5/LT3021-1.8 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 206 204 202 200 198 196 194 –50 – 100 125 TEMPERATURE (°C) 3021 G04 Output Voltage 1. 1mA LOAD 1.22 1.21 1.20 1.19 ...

Page 6

LT3021/LT3021-1.2/ LT3021-1.5/LT3021-1 TYPICAL PERFOR A CE CHARACTERISTICS GND Pin Current 1.2V OUT R = 2.4Ω 25° 500mA 4.8Ω 250mA 4 ...

Page 7

W U TYPICAL PERFOR A CE CHARACTERISTICS Input Ripple Rejection 22µF OUT 4.7µF OUT 1.5V + 50mV RIPPLE 10 IN RMS V = 0.5V OUT I = 500mA ...

Page 8

LT3021/LT3021-1.2/ LT3021-1.5/LT3021-1 CTIO S (DH Package/S8 Package) OUT (Pins 3, 4/Pin 2): These pins supply power to the load. Use a minimum output capacitor of 3.3µF to prevent oscil- lations. Applications with large load transients ...

Page 9

U U APPLICATIO S I FOR ATIO The LT3021 is a very low dropout linear regulator capable of 1V input supply operation. Devices supply 500mA of output current and dropout voltage is typically 155mV. Quiescent current is typically 120µA and ...

Page 10

LT3021/LT3021-1.2/ LT3021-1.5/LT3021-1 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 LT3021 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

LT3021/LT3021-1.2/ LT3021-1.5/LT3021-1 APPLICATIO S I FOR ATIO The LT3021 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 LT3021 is powered by a battery mounted in close proximity on the same circuit board, a 3.3µF input capaci- tor is sufficient for stability. However, if the LT3021 is powered by ...

Page 14

LT3021/LT3021-1.2/ LT3021-1.5/LT3021-1.8 PACKAGE DESCRIPTIO 5.50 ±0.05 4.10 ±0.05 3.45 ±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 (WJJD-1) IN JEDEC ...

Page 15

... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 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 2.2µF Ceramic Capacitors, : 0.4V to 3.6V (min 0.05V 54µA, OUT 1.21V to 10V Set by External MOSFET OUT DO LT 0406 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2005 = 16µA, < 1µA, < 1µA, < 1µA, < 1µA, < 1µA, < 1µA, < 1µA, 3021fb ...

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