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AX6636B Datasheet Preview

AX6636B Datasheet

Dual 600mA LDO Regulator

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AX6636A/B/C
Dual 600mA LDO Regulator with Enable
Function
GENERAL DESCRIPTION
The AX6636A/B/C is an efficient, precise dual-channel CMOS LDO regulator optimized
for ultra-low-quiescent applications. Regulators output1 and output2 are capable of sourcing
600mA of output current. The regulators are stable with output capacitors as low as 1μF,
including current limit, thermal shutdown protection, fast transient response, low dropout
voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. The
AX6636A/B/C contains internal pull high enable function that allows the output of each
regulator to be turned off independently. The AX6636A/B/C regulators are available in used
SOP-8L with Exposed Pad package.
FEATURES
- Input voltage range :
Channel1: 3.4V to 5.5V
Channel2: 2.8V to 5.5V
- Low Quiescent Current is 50uA/per channel (typ.)
- Fast transient response
- Tight Load and Line Regulation
- Current limit and thermal shutdown protection
- Support Ceramic Capacitors and Aluminum Electrolytic Capacitors for Stability
- Available in the SOP-8L with exposed pad Pb-Free Package
BLOCK DIAGRAM
VIN2
VIN1
VOUT2
Current
Limit2
Error
Amp
Thermal
Shutdown
Bandgap
Enable2 Enable1
Current
Limit1
Error
Amp
VOUT1
GND
EN2 EN1
1/10
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.2 Jul.13, 2010




AXElite

AX6636B Datasheet Preview

AX6636B Datasheet

Dual 600mA LDO Regulator

No Preview Available !

AX6636A/B/C
PIN ASSIGNMENT
The package of AX6636A/B/C is SOP-8L-EP; the pin assignment is given by:
( Top View )
Name
Description
VIN1 Channel1 input Voltage
VOUT1 1
8 EN1 VIN2 Channel 2 input Voltage
VIN1 2
VOUT2 3
VOUT1 Channel 1 Output Voltage
GND
7 GND
6 GND
VOUT2 Channel 2 Output Voltage
EN1
Channel 1 Shutdown Control Pin,
the pin is internal pull high.
VIN2 4
5 EN2
EN2
Channel 2 Shutdown Control Pin,
the pin is internal pull high.
SOP-8L-EP
GND Common Ground
ORDER/MARKING INFORMATION
Order Information
Top Marking
AX6636 X XX X
Output voltage
Package
Packing
A : VOUT1=3.3V, VOUT2=1.8V
B : VOUT1=3.3V, VOUT2=1.5V
C : VOUT1=3.3V, VOUT2=1.2V
ES : SOP-8L-EP
Blank:Tube
A : Taping
Logo
AX 6 6 3 6
X YYWWX
Part number
ID code:internal
WW: 01~52
Year: 10=2010
11=2011
A: AX6636A
B: AX6636B
C: AX6636C
ABSOLUTE MAXIMUM RATINGS (at TA=25°C)
Characteristics
Symbol
Rating
Unit
VIN1, VIN2 Pin Voltage
VIN1.2
6V
Output Voltage
VOUT1 /VOUT2 GND - 0.3 to VIN + 0.3 V
Enable Voltage
EN1/EN2 GND - 0.3 to VIN + 0.3 V
Power Dissipation
PD
Internal Limited
W
Storage Temperature Range
TST
-65 to +150
°C
Operating Junction Temperature Range
TOPJ
-40 to +125
°C
Junction Temperature
TJ
-40 to +150
°C
Thermal Resistance from Junction to case θJC 15 °C/W
Thermal Resistance from Junction to ambient
θJA
45 °C/W
Note :θJA is measured with the PCB copper area of approximately 1 in2(Multi-layer). That need connect to exposed
pad.
2/10
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.2 Jul.13, 2010


Part Number AX6636B
Description Dual 600mA LDO Regulator
Maker AXElite
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AX6636B Datasheet PDF






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