XC9511 TOREX SEMICONDUCTOR LTD., XC9511 Datasheet
XC9511
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XC9511 Summary of contents
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... The DC/DC converter block incorporates a P-channel driver transistor and a synchronous N-channel switching transistor. With an external coil, diode and two capacitors, the XC9511 can deliver output currents up to 800mA at efficiencies over 90%. The XC9511 is designed for use with small ceramic capacitors. ...
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... Specifications DC/DC Oscillation Frequency ④ Package ⑤ Device Orientation ⑥ ●Control Methods and VD SENSE Pin SERIES ① DC/DC CONTROL METHODS XC9511 D E PFM/PWM Automatic Switch F 2/ DCOUT 6 VROUT 5 AGND FUNCTION Power Ground Power Supply 1 Power Supply 2 VD Output Analog Ground ...
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... When implemented on a glass epoxy PCB. SYMBOL RATINGS A - 0.3 ~ 6.5 VDD 0 0.3 VDD VDD VDD 0.3 COUT VDD 0.3 ROUT VDD I 800 ROUT 0.3 DOUT 0 0 ±1300 Lx Pd 650 Topr - Tstg - 125 XC9511 Series Ta = 25℃ UNIT ℃ ℃ 3/35 ...
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... Output Voltage DC Oscillation Frequency Maximum Duty Ratio MAXDUTY Minimum Duty Ratio MINDUTY PFM Duty Ratio PFMDUTY * XC9511D/E/F U.V.L.O. Voltage (*1) VUVLO LX SW ‘High’ ON Resistance (* ‘Low’ ON Resistance LX SW ‘High’ Leak Current (*11 ‘Low’ Leak Current (*11) Maximum Output Current Current Limit (*8) ...
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... CHARACTERISTICS (Continued) XC9511xxxCSx (Continued) ●Regulator (3.3V product) PARAMETER SYMBOL Output Voltage VR OUT Maximum Output Current Imax2 Load Regulation VR Dropout Voltage 1 (*5) Vdif 1 Dropout Voltage 2 Vdif 2 VROUT Line Regulation V ・VR IN Current Limit Ilim2 Short-Circuit Current Ishort Ripple Rejection Rate PSRR Output Voltage VR Topr・ ...
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... XC9511 Series ■TEST CIRCUITS Circuit 1 Supply Current Circuit 3 Output Voltage (DC/DC) Oscillation Frequency, U.V.L.O. Voltage, Soft start Time Maximum Output Current, Efficiency, (PFM Duty Cycle), Circuit Resistance 6/35 Circuit 2 Output Voltage (VR), Load Regulation, Dropout Voltage, Maximum Output Current Circuit 4 Minimum Duty Cycle, Maximum Duty Cycle ...
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... VD Output Current * For the measurement of the VDD_Sense products, the input voltage was controlled. Circuit 11 Off-Leak Circuit 8 Detect Voltage, Release Voltage (Hysteresis Range) * For the measurement of the VDD_Sense products, the input voltage was controlled. Circuit 10 Latch Time Circuit 12 Ripple Rejection Rate XC9511 Series 7/35 ...
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... The XC9511A to C series are PWM control, while the XC9511D to F series can be automatically switched to PWM/PFM control. The PWM mode of the XC9511A to C series are controlled on a specified frequency from light loads through to heavy loads. Since the frequency is specified, the composition of a noise filter etc. becomes easy. However, the efficiency at the time of the light load may become low ...
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... Mode: Synchronous <Current Limit> The current limiter circuit of the XC9511 series monitors the current flowing through the P-channel MOS driver transistor connected to the Lx pin and features a combination of the constant-current type current limit mode and the operation suspension mode. ...
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... Speed LDO Voltage Regulator The voltage regulator block of the XC9511 series consists of a reference voltage source, error amplifier, and current limiter circuit. The voltage divided by split resistors is compared with the internal reference voltage by the error amplifier. ...
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... ON USE ●Application Information 1. The XC9511 series is designed for use with a ceramic output capacitor. If, however, the potential difference between dropout voltage or output current is too large, a ceramic capacitor may fail to absorb the resulting high switching energy and oscillation could occur on the output. If the input-output potential difference is large, connect an electrolytic capacitor in parallel to compensate for insufficient capacitance ...
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... PFM Duty < Step down ratio = DC PFM Duty: 30% (TYP.) Please use XC9511A to C types (PWM control) in cases where the load current value of the DC/DC converter is close to synchronous. ●DC/DC Waveform (1.8V, 600kHz) @ VIN=6.0V 7. With the DC/DC converter of the IC, the peak current of the coil is controlled by the current limit circuit. Since the peak current increases when dropout voltage or load current is high, current limit starts operating, and this can lead to instability ...
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... Rnon PchOnDuty / 100) 15. The voltage detector circuit built-in the XC9511 series internally monitor the V voltage and VR output pin voltage. For the XC9511B/C/E/F series, which voltage detector circuit monitors the DC/DC output pin voltage and the VR output pin voltage, please determine the detect voltage value (V following equation ...
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... XC9511 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (A) DC/DC CONVERTER (1) Efficiency vs. Output Current 14/35 ...
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... PERFORMANCE CHARACTERISTICS (Continued) (A) DC/DC CONVERTER (Continued) (2) Output Voltage vs. Output Current XC9511 Series 15/35 ...
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... XC9511 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (A) DC/DC CONVERTER (Continued) (3) Output Voltage vs. Ripple Voltage 16/35 ...
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... PERFORMANCE CHARACTERISTICS (Continued) (A) DC/DC CONVERTER (Continued) (4) Output Voltage vs. Ambient Temperature (5) Soft-Start Time vs. Ambient Temperature XC9511 Series 17/35 ...
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... XC9511 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (A) DC/DC CONVERTER (Continued) (6) LX Pch/Nch On Resistance vs. Input Voltage (7) Oscillation Frequency vs. Ambient Temperature Ambient Temperature :Ta(℃) 18/35 (8) U.V.L.O. Voltage vs. Ambient Temperature Ambient Temperature :Ta(℃) ...
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... PERFORMANCE CHARACTERISTICS (Continued) (A) DC/DC CONVERTER (Continued) (9-1) DC/DC Load Transient Response (D (a) PWM Control* (*XC9511A/B/C series) (b) PWM/PFM Automatic Switching Control* (*XC9511D/E/F series) : 1.5V, FOSC: 1.2MHz) COUT XC9511 Series 19/35 ...
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... XC9511 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (A) DC/DC CONVERTER (Continued) (9-2) DC/DC Load Transient Response (D (a) PWM Control* (*XC9511A/B/C series) (b) PWM/PFM Automatic Switching Control* (*XC9511D/E/F series) 20/35 : 1.8V, FOSC: 1.2MHz) COUT ...
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... PERFORMANCE CHARACTERISTICS (Continued) (A) DC/DC CONVERTER (Continued) (9-3) DC/DC Load Transient Response (D (a) PWM Control* (*XC9511A/B/C series) (b) PWM/PFM Automatic Switching Control* (*XC9511D/E/F series) : 3.3V, FOSC: 600kHz) COUT XC9511 Series 21/35 ...
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... XC9511 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (A) DC/DC CONVERTER (Continued) (9-4) DC/DC Load Transient Response (D (a) PWM Control* (*XC9511A/B/C series) (b) PWM/PFM Automatic Switching Control* (*XC9511D/E/F series) 22/35 : 1.5V, FOSC: 600kHz) COUT ...
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... PERFORMANCE CHARACTERISTICS (Continued) (A) DC/DC CONVERTER (Continued) (9-5) DC/DC Load Transient Response (D (a) PWM Control* (*XC9511A/B/C series) (b) PWM/PFM Automatic Switching Control* (*XC9511D/E/F series) : 1.8V, FOSC: 600kHz) COUT XC9511 Series 23/35 ...
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... XC9511 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (A) DC/DC CONVERTER (Continued) (9-6) DC/DC Load Transient Response (D (a) PWM Control* (*XC9511A/B/C series) (b) PWM/PFM Automatic Switching Control* (*XC9511D/E/F series) 24/35 : 3.3V, FOSC: 600kHz) COUT ...
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... PERFORMANCE CHARACTERISTICS (Continued) (B) VOLTAGE REGULATOR (1) Output Voltage vs. Input Voltage XC9511 Series 25/35 ...
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... XC9511 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (B) VOLTAGE REGULATOR (Continued) (2) Output Voltage vs. Output Current (Current Limit) 26/35 ...
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... PERFORMANCE CHARACTERISTICS (Continued) (B) VOLTAGE REGULATOR (Continued) (3) Dropout Voltage vs. Output Current XC9511 Series Ta=-40℃ 27/35 ...
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... XC9511 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (B) VOLTAGE REGULATOR (Continued) (4) Output Voltage vs. Output Current 28/35 ...
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... PERFORMANCE CHARACTERISTICS (Continued) (B) VOLTAGE REGULATOR (Continued) (5) Ripple Rejection Ratio vs. Ripple Frequency XC9511 Series 29/35 ...
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... XC9511 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (B) VOLTAGE REGULATOR (Continued) (6) VR Load Transient Response 30/35 ...
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... PERFORMANCE CHARACTERISTICS (Continued) (C) VOLTAGE DETECTOR (1) Output Current vs. Input Voltage (2) Detect Voltage vs. Input Voltage XC9511 Series 31/35 ...
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... XC9511 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (C) VOLTAGE DETECTOR (Continued) (3) Detect Voltage, Release Voltage vs. Ambient Temperature 32/35 ...
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... PERFORMANCE CHARACTERISTICS (Continued) (D) COMMON (1) Supply Current vs. Ambient Temperature (DC/DC & VR & VD) XC9511 Series 33/35 ...
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... Z reverse character repeated ( excepted) Note: No character inversion used. PRODUCT SERIES XC9511xxxxSx VD SENSE PRODUCT SERIES V XC9511AxxxSx DD D XC9511BxxxSx COUT V XC9511CxxxSx ROUT V XC9511DxxxSx DD D XC9511ExxxSx COUT V XC9511FxxxSx ROUT VR VD PRODUCT SERIES 3.3V 4.0V XC9511*14*S* PRODUCT SERIES XC9511xxx3Ax XC9511xxx6Ax XC9511xxxCAx PRODUCTION YEAR 2003 2004 ...
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... Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this catalog may be copied or reproduced without the prior permission of Torex Semiconductor Ltd. XC9511 Series 35/35 ...