Document
AP1120
DUAL 1A LOW DROPOUT POSITIVE REGULATOR
Features
• • • • • • • • 1.3V maximum dropout at full load current Fast transient response Output current limiting for each channel Built-in thermal shutdown each channel Good noise rejection Dual output ch1=3.3V, ch2=2.5V (1.8V for B version) Lead-Free Package: SOP-8L Lead Free Finish/RoHS Compliant for Lead Free products (Note 1)
General Description
AP1120 series are low dropout positive regulator to provide 1A output current capability. The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus termination and low current 3.3V/2.5V or 3.3V/1.8V logic supply. AP1120 series are guaranteed to have <1.3V dropout at full load current making it ideal to provide well regulated outputs dual channels with up to 18V input supply.
Applications
• • PC peripheral Communication
Connection Diagram
(Top View) GND1 1 VIN1 2 GND2 3 VIN2 4 AP1120 8 3.3V 7 3.3V 6 2.5V (1.8V) 5 2.5V (1.8V)
Ordering Information
AP 1120 X X X X
Package S : SOP-8L Vout Blank : CH1=3.3V CH2=2.5V B : CH1=3.3V CH2=1.8V Lead Free L : Lead Free Package Packing -U -13 : Tube : Taping
Note:
1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Device
Lead-free
Package Packaging Code (Note 2)
S SOP-8L
Quantity
100
Tube Part Number Suffix
-U
13” Tape and Reel Quantity Part Number Suffix
2500/Tape & Reel -13
AP1120S
Note:
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.
AP1120 Rev. 1
1 of 7 www.diodes.com
SEPTEMBER 2006
© Diodes Incorporated
AP1120
DUAL 1A LOW DROPOUT POSITIVE REGULATOR
Pin Descriptions
NAME GND1/2 3.3V(Vout1) 2.5V/1.8V (Vout2) Ground The output of the regulator. A minimum of 10uF capacitor (0.15Ω ≤ ESR ≤ 20Ω) must be connected from this pin to ground to insure stability. The input pin of regulator. Typically a large storage capacitor (0.15Ω ≤ ESR ≤ 20Ω) is connected from this pin to ground. FUNCTION
VIN1/2
Block Diagram
2 Vin 1 + + 1.25V CURRENT LIMIT + Thermal Shutdown 4 Vin 2 + + 1.25V CURRENT LIMIT + Thermal Shutdown + +
7,8 Vout 1
AP1120 Rev. 1
2 of 7 www.diodes.com
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-
-
1
GND 1
5,6 Vout 2
3
GND 2
SEPTEMBER 2006
© Diodes Incorporated
AP1120
DUAL 1A LOW DROPOUT POSITIVE REGULATOR
Typical Circuit
5V C1 100uF
GND1 3.3V Vin1 3.3V
3.3V/1A
GND2 2.5V Vin2 2.5V C2 100uF
2.5V/1A C3 100uF
(3.3V/2.5V Dual output )
Absolute Maximum Ratings
Symbol VIN PD TST TOP Parameter DC Supply Voltage Power Dissipation Storage Temperature Operating Junction Temperature Range Rating -0.3 to 18 V Internally Limited -65 to +150 0 to +150
o o
Unit V C C
AP1120 Rev. 1
3 of 7 www.diodes.com
SEPTEMBER 2006
© Diodes Incorporated
AP1120
DUAL 1A LOW DROPOUT POSITIVE REGULATOR
Electrical Characteristics (Under Operating Conditions)
PARAMETER CONDITIONS IOUT = 10mA, TA = 2.