AAT1151IKS-1.0-T1 AnalogicTech, AAT1151IKS-1.0-T1 Datasheet - Page 2

• Manufacturer Part Number: AAT1151IKS-1.0-T1
• Description: DC to DC Converter, 850kHz 700mA Synchronous Buck DC/DC Converter, Tape and Reel
• Manufacturer: AnalogicTech

Pin Descriptions
Pin Configuration
2
MSOP-8
6, 7
1
2
3
4
5
8
Pin #
SGND
V
13, 14, 15
10, 11, 12
FB
EN
QFN33-16
CC
1, 2, 3
8, 16
5, 6
4
7
9
1
2
3
4
(Top view)
MSOP-8
Symbol
SGND
PGND
VCC
EN
FB
VP
n/c
LX
8
7
6
5
P GND
LX
LX
V
850kHz 700mA Synchronous Buck DC/DC Converter
P
Function
Feedback input pin. This pin is connected to the converter output.
It is used to set the output of the converter to regulate to the
desired value via an internal resistive divider. For an adjustable
output an external resistive divider is connected to this pin on the
1V model.
Signal Ground. Connect the return of all small signal components
to this pin. (see board layout rules)
Enable input pin. A logic high enables the converter, a logic low
forces the AAT1151 into shutdown mode reducing the supply cur-
rent to less than 1µA. The pin should not be left floating.
Bias supply. Supplies power for the internal circuitry. Connect to
input power via low pass filter with decoupling to SGND.
Input Supply Voltage for the converter power stage. Must be close-
ly decoupled to PGND.
Connect inductor to these pins. Switching node internally connect-
ed to the drain of both high and low-side MOSFETs.
Main power ground return pin. Connect to the output and input
capacitor return. (see board layout rules)
Not internally connected.
PGnd
PGnd
PGnd
FB
1
2
3
4
(Top view)
QFN33-16
N/C
16
5
AAT 1151
L
15
6
X
L
14
7
X
L
13
8
X
12
11
10
9
Vp
Vp
Vp
VCC
AAT1151
1151.2003.11.0.91