AAT2689 Analogic Corporation, AAT2689 Datasheet - Page 16

• Manufacturer Part Number: AAT2689
• Manufacturer: Analogic Corporation

16
SystemPower
Figure 5: AAT2689IRN Evaluation
Figure 4: AAT2689IRN Evaluation Board Schematic For V
TM
100μF
6.0V - 24.0V
25V
PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters
C1
V
IN1
Board Top Layer.
+
U1
C1
C5, C6, C10
C4
C2, C3, C7, C8 Cap, MLC, misc., 0603
C9, C11
D1
D2
L1
R1 - R8
C15
EN1
C15
1μF
25V
J1
3
2
1
V
IN2
AAT2689 Analogic Technologies, Hi-Voltage Buck/LDO, TDFN34-16
Cap, MLC, 100μF/25V, Electrolytic cap
Cap, MLC, 2.2μF, 6.3V, 0805
Cap, MLC, 0.1μF/6.3V, 0603
Cap, MLC, 22μF/10V, 1206
BAS16, Generic, Rectifier, 0.2A/85V, Ultrafast, SOT23
B340A, Generic, Schottky Rectifier, 3A/40V, SMA
RCH108NP-4R7M, 4.7μF, I
Carbon film resistor, 0402
Cap, MLC,1μF/25V, 0603
2
1
BAS16
0.1μF
2.2μF
C5
2.2μF
C4
D1
C6
EN2
3
1
2
w w w . a n a l o g i c t e c h . c o m
14
12
11
2
1
3
9
8
SAT
IN1
EP2
AAT2689
IN2
EN 2
BST1
VL1
IN1
EN1
AGND
TDFN34-16
= 5.3A, DCR = 11.7mΩ or Wurth 744 778 900 4, 4.7μH, I
U1
COMP1
OUT2
GND
OS1
RS1
EP1
FB1
LX1
LX1
10
16
13
15
4
5
7
6
D2
C10
2.2μF
R1 24.3k
56pF
R2
2k
4.7μH/5.3A
C3
L1
C14
open
open
1.8V/600mA
Figure 6: AAT2689IRN Evaluation
R6
470pF
V
IN
OUT2
C2
C7
220nF
R7
= 6V to 24V and V
2k
Board Bottom Layer.
330pF
R8
133k
499
R5
C8
PRODUCT DATASHEET
SAT
= 3.9A, DCR = 35mΩ
R3
27.4k
R4
6.04k
C9
22μF
AAT2689
C11
22μF
3.3V/2.5A
V
OUT
OUT1
C12, C13
open
= 3.3V.
2689.2008.06.1.0