MAX8734AEEI+ Maxim Integrated Products, MAX8734AEEI+ Datasheet - Page 17

• Manufacturer Part Number: MAX8734AEEI+
• Description: IC PWR SUPPLY CONTROLLER 28QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX8734AEEI+

• Applications: Power Supply Controller
• Voltage - Input: 4.5 ~ 24 V
• Current - Supply: 25µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-QSOP
• Product: Power Monitors
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Accuracy: 1.5 %
• Supply Current (max): 50 uA
• Supply Voltage (max): 4.5 V
• Supply Voltage (min): 24 V
• Case: SSOP
• Dc: 06+
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Each PWM controller consists of a Dual-Mode feedback
network and multiplexer, a multi-input PWM comparator,
high-side and low-side gate drivers, and logic. The
MAX8732A/MAX8733A/MAX8734A contain fault-protection
circuits that monitor the main PWM outputs for undervolt-
age and overvoltage conditions. A power-on sequence
Figure 4. PWM Controller (One Side Only)
Supply Controllers for Notebook Computers
High-Efficiency, Quad-Output, Main Power-
______________________________________________________________________________________
OUT
TON (MAX8734A)
ILIM_
FB_
REF
CS_ (MAX8732A/8733A)
LX_ (MAX8734A)
SKIP
OUT_
PRO
0.15V
TRIG
0.7 x V
ONE SHOT
COMPUTE
ON-TIME
REF
t
ON
0.9 x V
1.1 x V
V+
REF
REF
Q
AMPLIFIER
ERROR
CURRENT
LIMIT
Σ
CROSSING
ZERO
block controls the power-up timing of the main PWMs and
monitors the outputs for undervoltage faults. The
MAX8732A/MAX8733A/MAX8734A include 5V and 3.3V
linear regulators. Bias generator blocks include the 5V
(LDO5) linear regulator, 2V precision reference, and auto-
matic bootstrap switchover circuit.
OV_FAULT
UV_FAULT
BLANKING
20ms
Q
R
ONE SHOT
LATCH
S
FAULT
t
R
S
OFF
Q
TRIG
Q
TO DH_ DRIVER
TO DL_ DRIVER
PGOOD
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