Advanced Analog Technology, Inc.
May 2008
AAT1168/1168A/1168B
ELECTRICAL CHARACTERISTICS
( V
DD
= 2.6V to 5.5V, T
C
=
–40
°
C
to 85
°
C
, unless otherwise specified. Typical values are tested at 25
°
C
ambient
temperature, V
DD
= 5V, V
DD1
= 10V.)
Soft Start & Fault Detect
PARAMETER
Channel 1 Soft Start Time
Channel 2 Soft Start Time
Channel 3 Soft Start Time
Channel 1 to Channel 2 Delay
Channel 2 to Channel 3 Delay
SYMBOL
TEST CONDITION
MIN
TYP
14
14
14
AAT1168A Only
AAT1168A Only
AAT1168/AAT1168B
During Fault Protect Trigger Time
7
7
55
165
1.00
1.13
0.40
1.00
1.05
1.17
0.45
1.05
1.10
1.20
0.50
1.10
MAX
UNIT
ms
ms
ms
ms
ms
ms
ms
V
V
V
V
t
SS1
t
SS2
t
SS3
t
D12
t
D23
t
FP
AAT1168A
AAT1168/AAT1168B
IN1 Fault Protection Voltage
IN2 Fault Protection Voltage
IN3 Fault Protection Voltage
V
F1
V
F2
V
F3
AAT1168A
Error Amplifier (Channel 1)
PARAMETER
Feedback Voltage
Input Bias Current
Feedback-Voltage Line Regulation
Transconductance
Voltage Gain
SYMBOL
TEST CONDITION
MIN
1.221
TYP
1.233
0
0.05
105
1,500
MAX
1.245
40
0.15
UNIT
V
nA
%/V
V
IN1
I
B1
V
RI1
G
m
A
V
V
IN1
= 1V to 1.5V
Level to Produce
V
EO
= 1.233V
2.6V <
V
DD
< 5.5V
∆I
= 5
µ
A
–40
µ
S
V/V
–
Advanced Analog Technology, Inc. –
Version 1.00
Page 5 of 22
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