Datasheet LT3021, LT3021-1.2, LT3021-1.5, LT3021-1.8 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | 500mA, Low Voltage, Very Low Dropout Linear Regulator |
| Pages / Page | 18 / 1 — FEATURES. DESCRIPTION. VIN Range: 0.9V to 10V. Dropout Voltage: 155mV … |
| File Format / Size | PDF / 326 Kb |
| Document Language | English |
FEATURES. DESCRIPTION. VIN Range: 0.9V to 10V. Dropout Voltage: 155mV Typical. Output Current: 500mA
Model Line for this Datasheet
- LT3021EDH#PBF LT3021EDH#TRPBF LT3021EDH-1.2#PBF LT3021EDH-1.2#TRPBF LT3021EDH-1.5#PBF LT3021EDH-1.5#TRPBF LT3021EDH-1.8#PBF LT3021EDH-1.8#TRPBF LT3021ES8#PBF LT3021ES8#TRPBF LT3021ES8-1.2#PBF LT3021ES8-1.2#TRPBF LT3021ES8-1.5#PBF LT3021ES8-1.5#TRPBF LT3021ES8-1.8#PBF LT3021ES8-1.8#TRPBF LT3021IS8-1.8#PBF LT3021IS8-1.8#TRPBF
Text Version of Document
LT3021/LT3021-1.2/ LT3021-1.5/LT3021-1.8 500mA, Low Voltage, Very Low Dropout Linear Regulator
FEATURES DESCRIPTION
n
VIN Range: 0.9V to 10V
The LT®3021 is a very low dropout voltage (VLDO™) lin- n
Dropout Voltage: 155mV Typical
ear regulator that operates from input supplies down to n
Output Current: 500mA
0.9V. This device supplies 500mA of output current with n
Adjustable Output (VREF = VOUT(MIN) = 200mV)
a typical dropout voltage of 155mV. The LT3021 is ideal n
Fixed Output Voltages: 1.2V, 1.5V, 1.8V
for low input voltage to low output voltage applications, n Stable with Low ESR, Ceramic Output Capacitors providing comparable electrical efficiency to that of a (3.3µF Minimum) switching regulator. n 0.2% Load Regulation from 1mA to 500mA The LT3021 regulator optimizes stability and transient n Quiescent Current: 110µA (Typ) response with low ESR, ceramic output capacitors as small n 3µA Typical Quiescent Current in Shutdown as 3.3µF. Other LT3021 features include 0.05% typical line n Current Limit Protection regulation and 0.2% typical load regulation. In shutdown, n Reverse-Battery Protection quiescent current typically drops to 3µA. n No Reverse Current n Thermal Limiting with Hysteresis Internal protection circuitry includes reverse-battery pro- n 16-Pin DFN (5mm × 5mm) and 8-Lead tection, current limiting, thermal limiting with hysteresis, SO Packages and reverse-current protection. The LT3021 is available as an adjustable output device with an output range down to
APPLICATIONS
the 200mV reference. Three fixed output voltages, 1.2V, 1.5V and 1.8V, are also available. n Low Current Regulators The LT3021 regulator is available in the low profile n Battery-Powered Systems (0.75mm) 16-pin (5mm × 5mm) DFN package with ex- n Cellular Phones posed pad and the 8-lead SO package. n Pagers n Wireless Modems All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION Minimum Input Voltage
1.1 IL = 500mA 1.0
1.8V to 1.5V, 500mA VLDO Regulator
0.9 0.8 V V IN OUT IN OUT 0.7 1.8V 1.5V LT3021-1.5 3.3 500mA 3.3μF μF 0.6 SHDN SENSE 0.5 GND 0.4 0.3 3021 TA01 MINIMUM INPUT VOLTAGE (V) 0.2 0.1 0–50 –25 0 25 50 75 100 125 TEMPERATURE (°C) 3021 TA02 Rev.D Document Feedback For more information www.analog.com 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Typical Performance Characteristics Pin Functions Applications Information Package Description
FEATURES DESCRIPTION
n
VIN Range: 0.9V to 10V
The LT®3021 is a very low dropout voltage (VLDO™) lin- n
Dropout Voltage: 155mV Typical
ear regulator that operates from input supplies down to n
Output Current: 500mA
0.9V. This device supplies 500mA of output current with n
Adjustable Output (VREF = VOUT(MIN) = 200mV)
a typical dropout voltage of 155mV. The LT3021 is ideal n
Fixed Output Voltages: 1.2V, 1.5V, 1.8V
for low input voltage to low output voltage applications, n Stable with Low ESR, Ceramic Output Capacitors providing comparable electrical efficiency to that of a (3.3µF Minimum) switching regulator. n 0.2% Load Regulation from 1mA to 500mA The LT3021 regulator optimizes stability and transient n Quiescent Current: 110µA (Typ) response with low ESR, ceramic output capacitors as small n 3µA Typical Quiescent Current in Shutdown as 3.3µF. Other LT3021 features include 0.05% typical line n Current Limit Protection regulation and 0.2% typical load regulation. In shutdown, n Reverse-Battery Protection quiescent current typically drops to 3µA. n No Reverse Current n Thermal Limiting with Hysteresis Internal protection circuitry includes reverse-battery pro- n 16-Pin DFN (5mm × 5mm) and 8-Lead tection, current limiting, thermal limiting with hysteresis, SO Packages and reverse-current protection. The LT3021 is available as an adjustable output device with an output range down to
APPLICATIONS
the 200mV reference. Three fixed output voltages, 1.2V, 1.5V and 1.8V, are also available. n Low Current Regulators The LT3021 regulator is available in the low profile n Battery-Powered Systems (0.75mm) 16-pin (5mm × 5mm) DFN package with ex- n Cellular Phones posed pad and the 8-lead SO package. n Pagers n Wireless Modems All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION Minimum Input Voltage
1.1 IL = 500mA 1.0
1.8V to 1.5V, 500mA VLDO Regulator
0.9 0.8 V V IN OUT IN OUT 0.7 1.8V 1.5V LT3021-1.5 3.3 500mA 3.3μF μF 0.6 SHDN SENSE 0.5 GND 0.4 0.3 3021 TA01 MINIMUM INPUT VOLTAGE (V) 0.2 0.1 0–50 –25 0 25 50 75 100 125 TEMPERATURE (°C) 3021 TA02 Rev.D Document Feedback For more information www.analog.com 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Typical Performance Characteristics Pin Functions Applications Information Package Description
