AAT1202 AAT, AAT1202 Datasheet

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AAT1202

Manufacturer Part Number
AAT1202
Description
MULTI-INPUT LOW-DROPOUT REGULATOR
Manufacturer
AAT
Datasheet
Features
Pin Configuration
Complete Power Management
Automatic Input Voltage Selection
Input Voltage Source Detector With
Hysteresis
250-mA Load Current Capability With
VCC50 or VSB50 or AUX33 Input Source
Integrated Low r
Dual Regulated Output 3.3V (fixed) & 1.8V
(fixed)
Output Short Circuit Protection
OUT33
VSB50
VCC50
AUX33
( 8-PIN SOIC )
1
2
3
4
TOP VIEW
Advanced Analog Technology, Inc.
DS (on)
Switch
8
7
6
5
台灣類比科技股份有限公司
Advanced Analog Technology, Inc
OUT18
GND
250-mA MULTI-INPUT LOW-DROPOUT REGULATOR
GND
EN18
WITH DUAL -OUTPUT POWER MANAGEMENT
www.DataSheet4U.com
Description
The AAT1202 is a multi-input low-dropout
regulator that provides dual constant output supply
3.3V & 1.8V at the output capable of driving a
250-mA load.
The output (OUT18) can be disable by connect
EN18 pin to GND.
The AAT1202 provides dual regulated power
output for systems that have multiple input
sources and require dual constant voltage source
with a low-dropout voltage. This is a intelligent
power source selection device with a low-dropout
regulator for either VCC50 or VSB50 inputs, and
a low-resistance bypass switch for the AUX33
input.
Transitions may occur from one input supply to
another without generating a glitch outside of the
specification range on the 3.3-V & 1.8-V output.
The device has an incorporated reverse-blocking
scheme to prevent excess leakage from the input
terminals in the event that the output voltage is
greater than the input voltage.
The input voltage is prioritized in the following
order: VCC50, VSB50, AUX33.
.
AAT1202
V 0.1

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AAT1202 Summary of contents

Page 1

... SOIC ) – 250-mA MULTI-INPUT LOW-DROPOUT REGULATOR WITH DUAL -OUTPUT POWER MANAGEMENT Description The AAT1202 is a multi-input low-dropout regulator that provides dual constant output supply 3.3V & 1.8V at the output capable of driving a 250-mA load. The output (OUT18) can be disable by connect EN18 pin to GND. ...

Page 2

... A 台灣類比科技股份有限公司 Advanced Analog Technology, Inc AAT1202 OUTPUT OUTPUT (V) (I) (mA) ...

Page 3

... J ………………….…………..…...260℃ LEAD ( ) 台灣類比科技股份有限公司 Advanced Analog Technology, Inc AAT1202 Min Typ Max Unit 4.5 5 ...

Page 4

... AUX33, VSB50 or VCC50 = GND, Out33 = 3.3v VSB50 or VCC50↓ VSB50 or VCC50↑ VSB50 = VCC50 = 0V, AUX33 = 3.3V 150mA L Without copper for heat spreading 台灣類比科技股份有限公司 Advanced Analog Technology, Inc AAT1202 = 0℃ Min Typ Max Unit 4.5 5 5.5 3.135 3.3 3 ...

Page 5

... Advanced Analog Technology, Inc. VCC50 3.3V VCC50 Detector AUX33 TEMPERATURE PROTECTION GND – Control Low on Resistance 1.8V OVER 台灣類比科技股份有限公司 Advanced Analog Technology, Inc VSB50 + 3.3V - OUT33 VSB50 Detector EN18 + - OUT18 – . AAT1202 V 0.1 ...

Page 6

... Advanced Analog Technology, Inc. TYPICAL CHARACTERISTICS Figure 1. 3.3V VCC50 Cold Start Figure 2. 1.8V VCC50 Cold Start – 台灣類比科技股份有限公司 Advanced Analog Technology, Inc AAT1202 – 0.1 ...

Page 7

... Advanced Analog Technology, Inc. TYPICAL CHARACTERISTICS Figure 3. 3.3V AUX33 Cold Start Figure 4. 1.8V AUX33 Cold Start – 台灣類比科技股份有限公司 Advanced Analog Technology, Inc AAT1202 – 0.1 ...

Page 8

... Advanced Analog Technology, Inc. TYPICAL CHARACTERISTICS Figure 5. 3.3V VCC50 Power Up(VSB50=5V) Figure 6. 1.8V VCC50 Power Up(VSB50=5V) – 台灣類比科技股份有限公司 Advanced Analog Technology, Inc AAT1202 – 0.1 ...

Page 9

... Advanced Analog Technology, Inc. TYPICAL CHARACTERISTICS Figure 7. 3.3V VCC50 Power Up(AUX33=3.3V) Figure 8. 1.8V VCC50 Power Up(AUX33=3.3V) – 台灣類比科技股份有限公司 Advanced Analog Technology, Inc AAT1202 – 0.1 ...

Page 10

... Advanced Analog Technology, Inc. TYPICAL CHARACTERISTICS Figure 9. 3.3V VSB50 Power Up(AUX33=3.3V) Figure 10. 1.8V VSB50 Power Up(AUX33=3.3V) – 台灣類比科技股份有限公司 Advanced Analog Technology, Inc AAT1202 – 0.1 ...

Page 11

... Advanced Analog Technology, Inc. TYPICAL CHARACTERISTICS Figure 11. 3.3V VCC50 Power Down(VSB=5V) Figure 12. 1.8V VCC50 Power Down(VSB=5V) – 台灣類比科技股份有限公司 Advanced Analog Technology, Inc AAT1202 – 0.1 ...

Page 12

... Advanced Analog Technology, Inc. TYPICAL CHARACTERISTICS Figure 13. 3.3V VCC50 Power Down(AUX33=3.3V) Figure 14. 1.8V VCC50 Power Down(AUX33=3.3V) – 台灣類比科技股份有限公司 Advanced Analog Technology, Inc AAT1202 – 0.1 ...

Page 13

... Advanced Analog Technology, Inc. TYPICAL CHARACTERISTICS Figure 15. 3.3V Load Transient Response Falling. Figure 16. 1.8V Load Transient Response Falling. – 台灣類比科技股份有限公司 Advanced Analog Technology, Inc AAT1202 – 0.1 ...

Page 14

... Advanced Analog Technology, Inc. TYPICAL CHARACTERISTICS Figure 17. 3.3V Load Transient Response Rising Figure 18. 1.8V Load Transient Response Rising – 台灣類比科技股份有限公司 Advanced Analog Technology, Inc AAT1202 – 0.1 ...

Page 15

... D Note: The thermal characteristics of the AAT1202 were measured using a double-sided board with two square inches of copper area connected to the GND pins for "heat spreading". The use of multi-layer board construction with power planes will further enhance the thermal performance of the package. ...

Page 16

... NOTE: These curves are to be used for guideline purposes only. For a particular application, a more specijic thermal characterization is required. Power Dissipation Derating Curves – 台灣類比科技股份有限公司 Advanced Analog Technology, Inc 83 94 150 – . AAT1202 V 0.1 ...

Page 17

... Advanced Analog Technology, Inc 8 GND 7 GND AAT1202 6 TO OUT33 or EN18 FLOATING 5 OUT18 8 VSB50 GND FLOATIN 7 VCC50 GND AAT1202 6 OUT33 EN18 5 OUT18 AUX33 FLOATIN AAT1202 1.8V 4.7 μ F GND or GND GND or – 0.1 ...

Page 18

... Advanced Analog Technology, Inc AAT1202 E1 7°(4X) eB Nom Max 1.600 1.702 0.610 0.66 0.406 0.508 4.826 4.877 3.912 3.962 5 ...

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