I2C口同步降压100W输出-ZCC7200

Siweidianzi

Features
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Wide Input Voltage Range from 4V to 36V
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Programmable VOUT Range from 0.8V to 24V

Peak Current Mode Control

Integrated 6V/3A Peak Gate Drive
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Adjustable Cycle-by-Cycle Current Limit by ILIM
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Adjustable Frequency: 100kHz~1MHz

External Soft-Start Limits the Input Inrush Current
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Internal PMOS Driver for Bypass Mode
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Selectable FCCM or DCM with Pulse Skipping
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; R) ~, [( y$ ~1 k" }5 MCable Impedance Compensation
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Low Dropout Operation with Maximum Duty
Cycle at 99.5%

I2C Programmable Output Range from 3.0V to
' P6 p0 n8 _$ w* c; _6 {21V in 200mV Per Step
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) s/ j0 S" x% oInput Under-Voltage Lockout
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Output OCP, SCP, OVP
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Thermal Shutdown
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QFN-20 Package, 3mm×3mm×0.75mm
3 a2 O# c2 k* B6 F7 JDescription
The ZCC7200 is a synchronous buck controller mainly
5 U0 T& I! k$ q$ |0 H: P+ q7 e" sfor widely varying input step-down regulator
applications. The control method is based upon
' g0 _/ Y4 z* `# e% T6 {5 {% P% ]current mode control that enables maximum
4 j1 f5 E" Z3 @) upeRFormance under transient conditions. The output
voltage can be either programmed by the FB pin or
: V& R" K. O+ w2 P" Zconfigured by the I2C interface from 3.0V to 21V in
200mV per step. It operates as a Buck mode while
5 ]: v0 ]7 n# nthe input voltage is sufficiently greater than the
4 A! m4 I- k; [$ ]2 n# I$ w. iregulated output voltage and transitions to the bypass
mode as the input voltage very approaches the output
voltage. It also features an adjustable soft-start
" j% u# Q- }9 p! g1 ^function and offers protection features including input
UVLO, cycle-by-cycle current limit, output overload
' ?! |: G6 s/ \9 N2 w* ?protection (OLP) or OVP and thermal shutdown. In
) G' h4 q, _" `1 Z4 h3 Taddition, it features selectable Forced Continuous
  s; Q  k, Y6 m3 l# ~6 pConduction Mode (FCCM) or Discontinuous
" j1 [5 _9 V! |+ B1 qConduction Mode (DCM) operation for light load.
The ZCC7200 integrates an I2C compatible interface
for bypass mode selecting, output voltage setting, etc.
8 i: a4 |. K1 b7 j! B- WThe ZCC7200 is available in compact QFN3x3-20
6 ~/ {, D( X# [% l  N: _) q
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