MAX8792 Maxim Integrated Products, MAX8792 Datasheet - Page 11

• Manufacturer Part Number: MAX8792
• Description: Single Quick-PWM Step-Down Controller
• Manufacturer: Maxim Integrated Products

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Figure 1. MAX8792 Standard Application Circuit
The MAX8792 standard application circuit (Figure 1) gen-
erates a 1.5V or 1.05V output rail for general-purpose use
(15)
PIN
EP
14
Standard Application Circuits
LO
AGND
GND/OPEN/REF/V
HI
PGOOD
NAME
5V BIAS
SUPPLY
GND
______________________________________________________________________________________
ON
97.6kΩ
R3
AGND
AGND
AGND
OFF
CC
Open-Drain Power-Good Output. PGOOD is low when the output voltage is more than 200mV (typ)
below or 300mV (typ) above the target voltage (V
soft-start circuit has terminated, PGOOD becomes high impedance if the output is in regulation.
PGOOD is blanked—forced high-impedance state—when a dynamic REFIN transition is detected.
Ground/Exposed Pad. Internally connected to the controller’s ground plane and substrate.
Connect directly to ground.
1000pF
54.9kΩ
1μF
C2
C3
49.9kΩ
100kΩ
R2
1μF
R10
C1
R1
PWR
13
14
12
10
11
2
1
Controller with Dynamic REFIN
PGOOD
EN
REF
REFIN
V
V
SKIP
DD
CC
Single Quick-PWM Step-Down
AGND
GND
MAX8792
PWR
(EP)
TON
ILIM
BST
DH
LX
DL
FB
7
9
6
5
4
3
8
in a notebook computer. See Table 1 for component
selections. Table 2 lists the component manufacturers.
200kΩ
R
C
0.1μF
TON
BST
R5
82kΩ
AGND
B = 4250
100kΩ
68kΩ
NTC
R4
FUNCTION
PWR
REFIN
Pin Description (continued)
), during soft-start and soft-shutdown. After the
L1
REF
SEE TABLE 1 FOR COMPONENT SELECTION.
PWR
C
C
PWR
IN
OUT
7V TO 24V
1.05V/1.50V
10A (MAX)
INPUT
OUTPUT
11