ZCC5160 Synchronous Step-Down 60V 3A V2.0

四维电子

Features
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- \/ O, z6 l8 l3 z20-μA Quiescent current in regulation
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Input voltage range: 4V-60V
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Output voltage range: 1V-VIN
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Integrated upper and lower power MOSFET
7 l: Y' u5 f4 Y" N$ p( dmaximum current: 5A
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6 t# Q7 i9 P) H+ R. }3 gAdjustable frequency range: 200KHz~2MHz
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0 i" G& U- o4 n. cAutomatic switching of CCM/DCM/PFM mode
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, `; H5 H) I0 I- D0 [Adjustable soft-start time and Output voltage
tracking capability
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+ E, a# p+ r, R% PAutomatically switched bypass linear power
supply
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% p# s8 @5 F! {9 h+ w, HProvides ultra-low input and output dropout
voltage close to 100% duty cycle
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Internal Compensation
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Power-good flag
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Dynamic Frequency Stretch Technology
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+ ^, m. d1 Z6 K: v+ V5 kSupport large capacitive load start-up
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Protection function: UVLO/OCP/SCP/OTP/OVP
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Operating junction temperature range: -40℃ to
+125℃
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All pins have ±2000V (HBM) ESD protection
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ETSSOP 16-Pin Exposed Pad Package
Applications
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Industrial power supply
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Wide voltage input range power supply
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) }& ^5 V% B0 U- r8 ZLow ripple low noise power supply
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Automotive electronic power supply
Figure. 1 Typical Application Circuit
Description
ZCC5160 is a step-down DC/DC regulator with an
internal switch, featuring SKIP control mode, which
9 D8 |  g5 f; H3 W2 ?/ lcombines low quiescent current with high switching
frequency to achieve high-efficiency regulation over a
3 A2 n" ?% `" @wide range of load currents. SKIP mode uses a short
, N/ ^  @: q# \"burst" cycle to switch the inductor current through
! P( p! S! E1 T# `the internal power MOSFET, followed by a sleep
# V& C, |- ~. t% ]cycle in which the power switch is turned off and the
5 T* C& {& v/ n+ @load current is provided by the output capacitor. At
) ]' F- k$ t; {. n. C0 Q. b' alight loads, burst cycles are a small fraction of the
total cycle time, minimizing average supply current
and greatly improving efficiency at light loads.
$ E8 i9 _2 A7 lZCC5160 has a wide input voltage range of 4V-60V,
thus minimizing the need for external surge
suppression components. Making it the best choice
for wide input power range industrial and high cell
count battery pack applications. ZCC5160 is ideal for
: H6 x8 ?4 k6 B& W8 cuse in the 48V automotive power bus range.
ZCC5160 features low-value 100mΩ high-side and
, n  S) ~% p/ m  p" k80mΩ low-side MOSFET that provide at least 3A
output current capability with excellent load and line
transient response.
Additional features include: soft-start, thermal
shutdown, UVLO undervoltage lockout, gate driver
undervoltage lockout, maximum duty cycle limit timer,
and current limit shutdown timer. It also integrates
% z) ^( y0 N! w& Ioutput short-circuit protection, providing HICCUP
& D1 X1 P$ P/ |! b- |6 Rmode when the FB voltage is low to avoid
overheating during short-circuit.
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