UTC1117
LINEAR INTEGRATED CIRCUIT
1A LOW DROPOUT POSITIVE VOLTAGE REGULATOR
DESCRIPTION
The UTC1117 is a 1A low-dropou...
UTC1117
LINEAR INTEGRATED CIRCUIT
1A LOW DROPOUT POSITIVE VOLTAGE
REGULATOR
DESCRIPTION
The UTC1117 is a 1A low-dropout positive voltage
regulator. It is available in fixed and adjustable output voltage versions. Over-current and thermal protection are integrated onto the chip. Output current will decrease while it reaches the pre-set current or temperature limit. The dropout voltage is specified at 1.2V Maximum at full rated output current. UTC1117 Series provides excellent regulation over line, load and temperature variations.
TO-252
FEATURES
* Low dropout voltage ..............1.2V at 1A * Adjustable or fixed voltages * Typical line regulation ....... 0.2% * Typical load regulation ...... 0.15% * Adjust pin current less than 90mA * Over-current protection * Thermal protection
APPLICATIONS
* High Efficiency Linear
Regulators * 5V to 3.3V Voltage Converter * Battery Charger * Post
Regulators for Switching supplies
BLOCK DIAGRAM
Input
Current Limiting Amplifier Thermal Protection Output
Error Amp.
Bandgap Reference
ADJ/COM
PIN CONFIGURATION
TO-252 Top View SOT-223 Top View
1 2 3 1: GND/ADJ 2: VOUT 3: VIN
1 2 3
1: GND/ADJ 2: VOUT 3: VIN
YOUWANG ELECTRONICS CO.LTD
1
UTC1117
ABSOLUTE MAXIMUM RATINGS
Characteristic
Input Voltage Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) SOT-223 TO-252 SOT-223 TO-252
LINEAR INTEGRATED CIRCUIT
Symbol
VIN
Value
15 27* 15 63* 156 0 ~ 125 -65 ~ 150 260
Unit
V
θ
JC
θ
°C/W
JA
Operating Junct...