Analog Devices MAX77857, Руководство пользователя

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Evaluates: MAX77857 (WLP) MAX77857 Evaluation Kit
www.analog.com Analog Devices | 2
FB
C
OUT
2x 22 μ F
25V 0805
V
OUT
3.0V TO 15V
OUT
USING EX TERNA L FEEDBA CK RESISTORS
R
TOP
R
BOT
OPTIONAL
I
2
C INTERFACE
LX1
EN
IN
FB
AGND PGND
MAX77857
L
1.5 μ H
DC SOURCE
2.5V TO 16V
ENABLE
V
OUT
4.5V TO 15V
R
SEL*
V
L
SEL
OUT
C
VL
2.2 μ F
10V 0402
SCL
SDA
BST1 BST2 LX2
C
BST1
0.22 μ F
25V 0603
C
BST2
0.22 μ F
25V 0603
C
IN
2x 10 μ F
25V 0805
C
OUT
2x 22 μ F
25V 0805
V
IO
C
VIO
0.47 μ F
6.3V 0402
IO SUPPLY
1.08V TO 2.0V
*CHOOS E R
SEL
VALUE
BASED ON TABLE 2
USING INTERNAL FEEDBACK RESISTORS
POKB/INTB
(MAX77857B/C ONLY)
POK
/
INTERRUPT
V
IO
R
PU
15k
0402
C
FF
10pF
25V
0402
Figure 1. MAX77857 Typical Application Circuit
INPUT SUPPLY TERMINALS
SWITCH NODES PROBE POINTS
MAX77857 SOLUTION
OUTPUT LOAD TERMINALS
MAXUSB_INTERFACE# CONNECTOR
I
2
C SERIAL BUS TEST POINTS
INPUT VOLTAGE SENSE PINS OUTPUT VOLTAGE SENSE PINS
Figure 2. MAX77857 Evaluation Board