Rainbow Electronics MAX17008 - Manual (Page 14)

MAX17007A/MAX17008
Dual and Combinable QPWM Graphics
Core Controllers for Notebook Computers
14 ______________________________________________________________________________________
MAX17007A
MAX17008
6
TON1
AGND
R REFIN1
R
REFIN2
16
C
VCC
1 μF
R2
100k Ω
TO SYSTEM
POWER-GOOD
R9
10 Ω
R
TON1
220k Ω
R NTC1
10k Ω
R4
3.01k Ω
R
TON2
180k Ω
C REF
2.2nF
R REFIN3
GND
PWR
PWR
PWR
AGND
PWR
AGND
2
ILIM1
3
ILIM2
(CCI)
5
SKIP
11
EN1
25
EN2
1
REF
R
REFIN1
= 80.6k Ω
R REFIN2 = 121k Ω
R REFIN3 = 249k Ω 8
REFIN1
12
PGOOD1
24
PGOOD2
7
TON2
15
BST1
13
DH1
14
LX1
17
DL1
N
H1
N L1 20
PGND
10
CSH1
9
CSL1
28
FB2
4
V CC
18
V DD
REF
REF
+3.3V
H = 1.0V
L = 1.2V
4-LEVEL SKIP PIN
REF
+5V
CONNECT TO REF FOR
FIXED 1.5V OUTPUT
*LOWER INPUT VOLTAGES REQUIRE
ADDITIONAL INPUT CAPACITANCE.
V IN
7V TO 20V
EP
POWER GROUND
ANALOG GROUND
R1
100k Ω
C
VDD
2.2 μF
C1
0.22
μF
C BST1
0.1 μF
PWR
D L1
C IN1
R3
1.5k
Ω
C OUT1
2 x 330 μF
12m Ω
L1
1 μH, 16A, 3mΩ
V OUT1
1.2V/1.0V, 12A
ILIM1
ILIM2
V
CC
OPEN
REF
GND
R7
10 Ω
C2
1nF
PWR
C OUT1-CER
5 x 10 μF
CERAMIC
V OUT2
1.5V, 12A
R
NTC2
10k Ω
R6
3.01k Ω
PWR
AGND
PWR
21
BST2
23
DH2
22
LX2
19
DL2
N
H2
N L2
26
CSH2
27
CSL2
V
IN
7V TO 20V
C3
0.22
μF
C BST2
0.1 μF
PWR
D L2
C IN2
R5
1.5k
Ω
C
OUT2
2 x 330 μF
12m Ω
L2
1 μH, 16A, 3mΩ
R8
10 Ω
C4
1nF
PWR
C
OUT2-CER
5 x 10 μF
CERAMIC
CURRENT
LIMIT
60mV
45mV
30mV
15mV
Figure 1. MAX17007A/MAX17008 Separate-Mode Standard Application Circuit