AAT1415 Datasheet, PDF (18/32 Pages) Advanced Analog Technology, Inc. – FIVE-CHANNEL DC-DC CONVERTER WITH A 2.5V LDO

Advanced Analog Technology, Inc.
May 2008
AAT1415/AAT1415A
FUNCTION BLOCK DIAGRAM
40
VDD
13 ^EN1
12 _IN1
Vref
11
EO1
Fault Protection
VF13
Soft-Start
Current Limit
OUT1
9
Sawtooth1
Current
Sense
Current Limit
Fault Protection
Current
Sense
Current Limit
EN2 ₂₀
VF13
21
IN2
EO2 ²²
Vref
Soft-Start
Sawtooth1
OUT2 ₂₃
8 ^SW1
Pre-
Driver
Digital
Block
7 ^GND1
10 ^SEL1
18 _TR1
Step-up / Step-down
EN1
37 ^EN4
35 IN4
36
EO4
Vref
Soft-Start
Sawtooth2
OUT4
38
39 _GND4
Low Voltage
OSCillator
15
OSC
Normal
OSCillator
Fault
Protection
Digital
Block
OSC
VDD OUT1
UVLO
14
Reference
VREF
2.5V
28
GNDC
26
V2P5
2.5V LDO
OSC
Digital
Block
Pre-
Driver
Step-up / Step-down
SW2 ₂₄
GND2 ₂₅
SEL2 ₁₉
Fault Protection
Current
Sense
Current Limit
OSC
Digital
Block
EN3 ₁
VF13
IN3 ²
EO3 ³
Vref
Soft-Start
Sawtooth1
OUT3 ₄
Pre-
Driver
SW3 ₅
GND3 ₆
Fault
Protection
EN5 ₂₉
30
IN5
EO5 ³¹
0V
Soft-Start
Sawtooth2
OSC
Digital
Block
VF13
IN4
VDD5 ₃₂
33
OUT5
C4RDY ₁₆
27
VDDC
17
VF13
C3RDY
IN3
GND
34
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