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XC9213B103VX Datasheet(PDF) 1 Page - Torex Semiconductor |
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XC9213B103VX Datasheet(HTML) 1 Page - Torex Semiconductor |
1 / 33 page 1 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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