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1、IC Intelligent control Synchronous Boost/Buck YL6501 page1 of 10 IC Intelligent control Synchronous Boost/Buck Features Chip of communication switch power supply Internally installed buck modules, power modules and boost PMOS and NMOS drive current of 100mA drive. Functions as Voltage loop electric
2、current loop and by- cycle current limit of Switch power supply built up by analog circuit Automatically complete the functions such as voltage stabilization, constant current, current limiting and short circuit protection according to the base value of the digital circuit simulation loop. Functions
3、 of Synchronous Rectification MOS dead-time generator, range of adjustable dead-zone: 30nS350nS 2.5V reference voltage source , accuracy 1% Configure PWM clock oscillator, adjustable range: 190KHz 900KHz A road -by- cycle current limit comparator, protect the peak current power PMOS and NMOS effecti
4、vely, adjustable range: 50mV 250mV An op amp circuit voltage loop benchmarks, adjust the output voltage in real time 2 -channel constant current loop op amp benchmarks; adjust the output current in real time. 1 current loop amplifier and ramp compensation circuit Short circuit protective controller,
5、 delay time and release mode of Short circuit detection, range of adjustable delay time: 3uS213uS. Configure the chips internal registers via IC -bus Up to 8-channel 10-bit ADC converter, 1 optional 10 times the input preamplifier Built-in chip temperature sensor, available for reading internal temp
6、erature of the chip from external MCU 5 Groups LED constant current driver, no need for external current limiting resistor, adjustable range of constant current: 1mA 10mA One -way high-power LED driver, an external current limiting resistor, the maximum current is 100mA Wide range of operating volta
7、ge: 2.5V 5.5V Package: QFN24 Description YL6501-chip high-precision 2.5V reference voltage source, can be configured 190KHz 900KHz wide frequency oscillator, multiplex error amplifier, Buck / Boost power control module, 8-channel 10-bit ADC input ADC, IC bus control , digital circuit control module,
8、 LED constant current driver and power MOS drives. YL6501 is one kind of chip with communication switch power supply which is low-power and flexible. It has an external 6-pin micro-controller (ordinary GPIO function) MCU, which can achieve a high power management system and is very suitable for mobi
9、le devices, and battery management applications. IC Intelligent control Synchronous Boost/Buck YL6501 page2 of 10 Applications Phone mobile power applications Battery charger buck power supply system for mobile devices Tablet PC Smart Fast Charger Boost DC switching power supply Communication with d
10、igital power electric tools Pin Pin package QFN24L 4-1 definition of Pin package QFN YL6501 QFN24 Pin Description PIN NAME I/O DESCRIPTION 1 AD0 I ADC0 Input。 2 TH I NTC 3 OUT_EN O output enable control 4 Ico O Compensation 5 ILIM1 I Boost mode, constant current detecting a feedback channel1 inputs
11、6 AGND GND Analog GND 7 ILIM2 I Boost mode, constant current detecting a feedback channel2 inputs 8 SCL I/O I C clock an the wake up IC Intelligent control Synchronous Boost/Buck YL6501 page3 of 10 9 SDA I/O IC data。 10 CH I_set I Buck mode, charge current detection feedback input 11 BAT I Buck mode
12、, charge Voltage detection feedback input 12 COMP O Compensated op amp output terminal. 13 PGND GND Power GND 14 OUTL O NMOSFET DRIVE current 100mA 15 LX O LX 16 OUTH O PMOSFET DRIVE current 100mA 17 VCC Power VCC 18 BLED O LED current 100mA。 19 LED5 O LED5 20 LED4 O LED4 21 LED3 O LED3 22 LED2 O LE
13、D2 23 LED1 O LED1 24 VREF Power 2.5V reference , an external 1uF capacitor Typical Application Circuit YL6501 Power Bank Application IC Intelligent control Synchronous Boost/Buck YL6501 page4 of 10 Electrical Characteristics (Absolute Maximum Rating) TA=25, unless otherwise specified PARAMETER VALUE
14、 MIN VALUE MAX UNIT All the pin to PGND and AGND -0.3 6 V Operating Junction Temperature -55 150 Operating Ambient Temperature Range -45 85 Storage Junction Temperature -65 150 Lead Temperature (Soldering 10 sec.) - 300 Note：Overrun of absolute maximum rating might cause internal permanent damage of
15、 chin. Longtime Operation at the limiting condition might affect the reliability of chin. Typical Parameter TA=25，VCC=15V, unless otherwise specified VALUE NAME Test Conditions MIN TYPE MAX UNIT Input Voltage range Vcc - 2.5 5 5.5 V Sleep mode current Iccs Close all internal circuit module - - 5 uA standby Iccq Closed power MOSFET - 0.48 2 mA quiescent current Icc f=380KHz，BOOST 15 18 mA reference voltage reference voltage VREF VCC=5V 2.475 2
