MAX786CAI Maxim Integrated Products, MAX786CAI Datasheet - Page 9

• Manufacturer Part Number: MAX786CAI
• Description: IC PS CTRLR FOR NTBK DUAL 28SSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX786CAI

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 3.3V, 5V
• Current - Output: 3A
• Frequency - Switching: 200kHz, 300kHz
• Voltage - Input: 5.5 ~ 30 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Power - Output: 762mW
• Output Voltage: 3.3 V, 3.45 V, 3.6 V
• Input Voltage: 5.5 V to 30 V
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Case: SSOP28
• Dc: 99+
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 146982F

A synchronous rectifier at LX3 keeps efficiency high by
clamping the voltage across the rectifier diode.
Maximum current limit is set by an external low-value
sense resistor, which prevents excessive inductor cur-
rent during start-up or under short-circuit conditions.
Figure 2. MAX786 Block Diagram
SHDN
SYNC
GND
REF
D1
D2
V+
VL
_______________________________________________________________________________________
3.3V
5V
1.65V
1.65V
300kHz/200kHz
ON
OSCILLATOR ON
REGULATOR
REFERENCE
+5V LDO
LINEAR
Controller for Notebook Computers
+3.3V
2.8V
4V
STANDBY
P
Dual-Output Power-Supply
Programmable soft-start is set by an optional external
capacitor; this reduces in-rush surge currents upon
start-up and provides adjustable power-up times for
power-supply sequencing purposes.
4.5V
FAULT
CONTROLLER
CONTROLLER
(SEE FIG. 3)
(SEE FIG. 3)
PWM
PWM
ON
3.3V
ON
5V
FB3
CS3
BST3
DH3
LX3
DL3
SS3
PGND
ON3
FB5
CS5
BST5
DH5
LX5
DL5
SS5
ON5
VH
Q1
Q2
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