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ZSPM4023AA1W12

Description
Switching Voltage Regulators 24V Synchronous DC/DC Buck Regulator
Categorysemiconductor    Power management   
File Size1MB,38 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
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ZSPM4023AA1W12 Overview

Switching Voltage Regulators 24V Synchronous DC/DC Buck Regulator

ZSPM4023AA1W12 Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerIDT (Integrated Device Technology, Inc.)
Product CategorySwitching Voltage Regulators
Mounting StyleSMD/SMT
Package / CaseQFN-28
Output Voltage800 mV to 5.5 V
Output Current12 A
Number of Outputs1 Output
Input Voltage MAX28 V
TopologyBuck
Input Voltage MIN4.5 V
Switching Frequency600 kHz
Minimum Operating Temperature- 40 C
Maximum Operating Temperature+ 125 C
PackagingReel
ProductVoltage Regulators
TypeSynchronous Step-Down Regulator
Unit Weight0.002497 oz
24V/12A Synchronous DC/DC
Buck Regulator
ZSPM4023-12
Datasheet
Brief Description
The ZSPM4023-12 is a constant-frequency, syn-
chronous DC/DC buck regulator featuring adaptive
on-time control architecture. The ZSPM4023-12
operates over a 4.5V to 28V supply range (24V typi-
cal). It has an internal linear regulator that provides a
regulated 5V to power the internal control circuitry.
The ZSPM4023-12 operates at a constant 600kHz
(typical) switching frequency in continuous-
conduction mode and can be used to provide up to
12A of output current. The output voltage is adjust-
able from 5.5V down to 0.8V.
Under medium to heavy loads, the ZSPM4023-12
provides high efficiency and ultra-fast transient res-
ponse via its rapid-control architecture. Under light
load conditions, it maintains high efficiency and a
superior transient response by transitioning to
variable-frequency, discontinuous mode operation
with its ultra-light-load architecture.
The ZSPM4023-12 offers a full suite of protection
features to ensure protection of the IC during fault
conditions. These include under-voltage lockout to
ensure proper operation under power-sag con-
ditions; thermal shutdown; internal soft-start to
reduce inrush current; foldback current limiting; and
“hiccup” mode short-circuit protection. The
ZSPM4023-12 includes a power good (PG) output to
allow simple sequencing.
Benefits
Ultra-light load efficiency – up to 80% at 10mA
Up to 95% efficiency
Feedback reference accuracy as high as ±1%
Features
Rapid-control architecture enables operation with
a high input/output voltage ratio (e.g., V
IN
= 28V
and V
OUT
= 0.8V) and small output capacitance
Adjustable output voltage from 0.8V to 5.5V
Universally compatible with most output
capacitors—stable with zero to high ESR
Power good (PG) output
Foldback current limiting and “hiccup” mode
short-circuit protection
Safe start-up into pre-biased loads
Available Support
Evaluation Kit
Support documentation
Physical Characteristics
Input voltage range: 4.5V to 28V
Output current: up to 12A
Switching frequency: 600kHz
Junction temperature: –40°C to +125°C
28-pin 5mm
×
6mm QFN package
Efficiency (V
IN
= 24V)
vs. Output Current
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
0.9V
0.8V
ZSPM4023-12 Typical Application
95
90
85
EFFICIENCY (%)
80
75
70
65
60
55
50
0
3
6
9
12
V
IN
= 24V
15
OUTPUT CURRENT (A)
© 2016 Integrated Device Technology, Inc.
1
January 27, 2016
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