EP1117_15 Datasheet, PDF (1/10 Pages) Eorex Corporation – 1A Low Dropout Linear Regulator

eorex
EP1117
1A Low Dropout Linear Regulator
Features
Description
• Guaranteed Output Voltage Accuracy within 2%
• Fast Transient Response
• Load Regulation: 0.1% Typ.
• Line Regulation: 0.03% Typ.
• Low Dropout Voltage: 1.1V Typ. at I_OUT =1A
• On-chip Thermal Limiting: 150°C Typ.
• Adjustable Output: 1.25~10.7V
• Standard 3-pin SOT-223 and TO252 Power
Packages
Applications
• PC peripheral
• Low Voltage Logic Supplies
• Post Regulator for Switching Power Supply
The EP1117 is a low dropout three-terminal
adjustable or fixed-voltage regulator with 1A
output current capability. The EP1117 is available
in an adjustable version, with output ranging from
1.25V to 10.7V and fixed output voltages of 1.8V,
2.5V, 3.3V and 5.0V. Dropout voltage is
guaranteed at a maximum of 1.3V at 1A. On-chip
thermal limiting provides protection against any
combination of overload that would create
excessive junction temperatures. The EP1117 is
available in the industry standard 3-pin the low
profile surface mount SOT-223 and TO-252
power packages.
Typical Application
Fixed Mode Regulator
1.25V to 10.7V Adjustable Regulator
V_IN
10uF
V_IN
V_OUT
EP1117
FB
R1
120Ω
R2
120Ω
V_OUT
100uF
V_OUT= V_REF × _⎜⎛1 + ^R2 _⎟⎞
⎝ ^R1 ⎠
V_REF =1.25V
R1≒100Ω~200Ω
Jul. 2006
www.eorex.com
1/10