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XC9213B103VX Datasheet(PDF) 1 Page - Torex Semiconductor

Part # XC9213B103VX
Description  Synchronous Bootstrap N-ch & N-ch Driver
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Manufacturer  TOREX [Torex Semiconductor]
Direct Link  http://www.torex.co.jp
Logo TOREX - Torex Semiconductor

XC9213B103VX Datasheet(HTML) 1 Page - Torex Semiconductor

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Data Sheet
ud200528
Synchronous Bootstrap N-ch & N-ch Driver
Input Voltage Range
:4.0V ~ 25.0V
Oscillation Frequency
:300kHz (accuracy±15%)
High Efficiency
:93% (TYP.)
PWM / PFM Manual Switching Control
Overcurrent Protection Circuit Built-In
TSSOP-16 package
GENERAL DESCRIPTION
The XC9213 series is N-ch & N-ch drive, synchronous,
step-down DC/DC controller IC with a built-in bootstrap
driver circuit. Output will be stable no matter which load
capacitors, including low ESR capacitors, are used.
Resistance (RSENSE) of about several 10m Ω will be
required as a current sense. The phase compensation is
also run when a low ESR capacitor is used. In addition,
the circuit is double protected by the ways of limiting the
current while detecting overshoot current and making
output shutdown at any given timing by a protection time
setting capacitor (CPRO).
The output voltage can be set freely within a range of
1.5V~15.0V with 1.0V (accuracy±2%) of internal reference
voltage by using externally connected resistors (RFB1, 2).
Synchronous rectification PWM control can be switched to
non-synchronous
current
limit
PFM/PWM
automatic
switchable control (=voltage between RSENSE pins) by
using the MODE pin.
The series has a built-in voltage detector for monitoring a
selected voltage by external resistors.
During stand-by (CE pin = low) all circuits are shutdown to
reduce current consumption to as low as 4.0μA or less.
APPLICATIONS
PDAs
Mobile phones
Note book computers
Portable audio systems
Various multi-function power supplies
TYPICAL APPLICATION CIRCUIT
FEATURES
Input Voltage Range
:4.0V ~ 25.0V
Output Voltage Range :1.5V ~ 15.0V externally set
Reference voltage : 1.0V (±2%)
Oscillation Frequency :300kHz (±15%)
Output Current
:More than 5A (VIN=5.0V, VOUT=3.3V)
Control
:PWM/PFM manual -switching control
Current Limiter, Protection :Current limit operates at voltage
sense 170mV (TYP.). Shutdown
time can be adjusted by CPRO.
High Efficiency
:93% [TYP. PWM Mode @ VIN=5.0V,
VOUT = 3.3V, IOUT=1A]
Detect Voltage Function :Detects 0.9V / Open-drain output
Stand-by Current
:ISTB = 4.0μA (MAX.)
Load Capacitor
:Low ESR capacitor compatible
Package
:TSSOP-16
TYPICAL PERFORMANCE
CHARACTERISTICS
VOUT
CIN
CL
CSS
CSS
CE
MODE
VIN
VSENSE
VL
BST
EXT1
EXT2
PGND
AGND
CBST
RFB1
RFB2
L
CVL
SD2
RSENSE
Tr1
Tr2
VIN
XC9213
FB
LX
CPRO
CPRO
VDOUT
VDIN
VDOUT
VDIN
SD1
CFB
GO-Compatible
May 23, 2005 V7


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