I2C口同步降压100W输出-ZCC7200

Siweidianzi

Features

+ G8 h! z' B7 a$ wWide Input Voltage Range from 4V to 36V

& p$ Z4 m2 P: q6 Z7 a) xProgrammable VOUT Range from 0.8V to 24V
6 Y0 o1 g1 t& ~: H; c7 I
% _4 W1 C: a' P% ~, H. ~# p& m: r0 |3 @Peak Current Mode Control

& x( A' m. A' o0 U, YIntegrated 6V/3A Peak Gate Drive

Adjustable Cycle-by-Cycle Current Limit by ILIM

Adjustable Frequency: 100kHz~1MHz

External Soft-Start Limits the Input Inrush Current
. ?% ]0 T0 C1 W: g1 ]
Internal PMOS Driver for Bypass Mode

$ `) b- C3 P1 X' X0 n1 |Selectable FCCM or DCM with Pulse Skipping
8 ]) I' v' G2 _' k# l" K. N$ L
Cable Impedance Compensation
$ N  H, A3 q  P' d9 A/ O
Low Dropout Operation with Maximum Duty
Cycle at 99.5%

# A4 o4 Z8 Q: s: WI2C Programmable Output Range from 3.0V to
21V in 200mV Per Step

Input Under-Voltage Lockout

+ P( q8 M; B- Q  C2 pOutput OCP, SCP, OVP
# p$ H7 I8 a9 F( v6 i
Thermal Shutdown

QFN-20 Package, 3mm×3mm×0.75mm
Description
The ZCC7200 is a synchronous buck controller mainly
for widely varying input step-down regulator
applications. The control method is based upon
current mode control that enables maximum
# M4 ~# {0 x# ]: m: t% W" C% RpeRFormance under transient conditions. The output
/ C$ N' s9 X0 u  ?6 t4 L8 e0 p/ Ovoltage can be either programmed by the FB pin or
) s$ }8 Y; E5 m: Nconfigured by the I2C interface from 3.0V to 21V in
200mV per step. It operates as a Buck mode while
( R8 f/ l- C( h; H# [the input voltage is sufficiently greater than the
5 y8 o# `$ n: g0 rregulated output voltage and transitions to the bypass
mode as the input voltage very approaches the output
voltage. It also features an adjustable soft-start
3 |  F+ \" q; u, _function and offers protection features including input
) o7 i/ h/ G2 Y1 FUVLO, cycle-by-cycle current limit, output overload
protection (OLP) or OVP and thermal shutdown. In
addition, it features selectable Forced Continuous
Conduction Mode (FCCM) or Discontinuous
( V+ q- ?0 s5 G1 x$ }# ZConduction Mode (DCM) operation for light load.
The ZCC7200 integrates an I2C compatible interface
7 v' d1 t% f9 H3 @$ s4 Bfor bypass mode selecting, output voltage setting, etc.
The ZCC7200 is available in compact QFN3x3-20

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