150KHZ, STEP-DOWN DC/DC CONVERTER P1696 series step-down switchin

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150KHZ, STEP-DOWN DC/DC CONVERTER P1696 series step-down switchin

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UNISONIC TECHNOLOGIES CO., P1696
150KHZ, STEP-DOWN DC/DC CONVERTER
P1696 series step-down switching regulator able provide output current. available output voltages 2.5V 3.3V, 12V, adjustable output version.
LINEAR INTEGRATED CIRCUIT
SOP-8
FEATURES
*Output load current: *Adjustable version output voltage range, 1.23V 27.5V±4% *Operating voltage (VIN->30V) *Low power standby mode *High efficiency *Internal current thermal limit
*Pb-free plating product number:P1696L
ORDERING INFORMATION
Order Number Normal Lead Free Plating P1696-xx-S08-R P1696L-xx-S08-R P1696-xx-S08-T P1696L-xx-S08-T Package SOP-8 SOP-8 Packing Tape Reel Tube
P1696L-xx-S08-R (1)Packing Type (2)Package Type (3)Output Voltage Code (4)Lead Plating
Tape Reel, Tube S08: SOP-8 Lead Free Plating, Blank: Pb/Sn
5,6,7,8 NAME Output (Feedback) (Shutdown) DESCRIPTION Operating voltage input Switching output Output voltage feedback control ON/OFF shutdown Circuit Ground
www.unisonic.com.tw Copyright 2006 Unisonic Technologies Co.,
QW-R103-035,B
P1696
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
Current Source bias
1.235V Reference
2.5V Regulator
Start
Comp Comp
Frequency Compensation
Comp
Pre-driver
Switch Output
150kHz OSC.
Thermal Shutdown
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R103-035,B
P1696
ABSOLUTE MAXIMUM RATINGS
LINEAR INTEGRATED CIRCUIT
PARAMETER SYMBOL RATINGS UNIT Maximum Supply Voltage Operating Voltage VOPR ON/OFF Input Voltage VON/OFF -0.3 Feedback Voltage -0.3 Output Voltage Ground (Steady State) VOUT Power Dissipation Internally limited Junction Temperature +150 Operating Temperature TOPR +125 Storage Temperature TSTG +150 Note: Absolute maximum ratings those values beyond which device could permanently damaged. Absolute maximum ratings stress ratings only functional device operation implied.
ELECTRICAL CHARACTERISTICS
(TJ=25, VIN=12V 2.5V 3.3V, Adjustable version VIN=24V version, ILOAD=500mA.) PARAMETER SYMBOL TEST CONDITIONS UNIT 2.5V 3.8VVIN30V, 0.2AILOAD2A 3.3V 4.75VVIN30V, 0.2AILOAD2A 3.168 3.432 Output Voltage VOUT 5.0V 7VVIN30V, 0.2AILOAD2A 15VVIN30V, 0.2AILOAD2A 11.52 12.0 12.48 2.5V VIN=12V, ILOAD=2A 3.3V VIN=12V, ILOAD=2A Efficiency 5.0V VIN=12V, ILOAD=2A VIN=25V, ILOAD=2A P1696-ADJ 4.5VVIN30V, 0.2AILOAD2A 1.19 1.230 1.267 Feedback Voltage VOUT programmed Efficiency VIN=12V, VOUT=3V, ILOAD=2A OUTPUT VOLTAGE Feedback Bias Current IBIAS Adjustable Version Only, VFB=1.3V Oscillator Frequency fOSC (Note Saturation Voltage VSAT IOUT=2A (Note 1.16 (Note Duty Cycle (ON) (Note Duty Cycle (OFF) Current Limit Peak Current (Notes Output=0V (Notes Output Leakage Current Output=-1V (Note Quiescent Current (Note Standby Quiescent Current ISTBY ON/OFF pin=5V (OFF) (Note ON/OFF CONTROL ON/OFF Logic Input (Regulator Threshold Voltage High (Regulator OFF) ON/OFF Input Current VLOGIC=2.5V (Regulator OFF) VLOGIC=0.5V (Regulator 0.02 Note switching frequency reduced when second stage current limit activated. diode, inductor capacitor connected output pin. Feedback removed from output connected force output transistor switch Feedback removed from output connected 2.5V 3.3V, ADJ. version, version, force output transistor switch OFF.
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R103-035,B
P1696
TYPICAL APPLICATION
(Fixed Output Voltage Versions)
LINEAR INTEGRATED CIRCUIT
Input Capacitor P1696 -5.0V Output Inductor Schottky Diode Capacitor 5.0V/2A Output Load
5,6,7,8
ADJUSTABLE OUTPUT VOLTAGE VERSIONS
UNREGULATED INPUT
Locate Programming Resistors Near Feedback Using Short Leads Keep Feedback Wiring Away From Inductor Flux Output
ON/OFF
Feedback
1696-ADJ 5,6,7,8
Regulated Output
COUT
Heavy Lines Must Kept Short Ground Plane Construction Best Results
VREF
VOUT VREF
Where VREF 1.23V
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R103-035,B
P1696
TYPICAL CHARACTERISTICS
Normalized Output Voltage 5.15 VIN=20V,LLOAD=2A Normalized TJ=25 5.10
LINEAR INTEGRATED CIRCUIT
Line Regulation 5.15 5.10 VOUT=5V, LOAD=100mA Normalized TJ=25
Output Voltage
Output Voltage
5.05
5.05
5.00 4.95
5.00
4.95
4.90 4.85
4.90 4.85
Junction Temperature
Input Voltage
Efficiency Load 1.60
Switch Saturation Voltage
5.0V
Saturation Voltage
1.40
Efficiency
1.20
3.3V
1.00
0.80
0.60 Switch Current(A)
Input Voltage
Switch Current Limit 5.00 =12V, VOUT 4.75
Switch Current Limit
Operating Quiescent Current 30.0 4.5V< ISWITCH 25.0
Supply Current (mA)
4.50
20.0 Switch 15.0
4.25
4.00
10.0 Switch 5.00 0.00
3.75 3.50
Junction Temperature
Junction Temperature
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R103-035,B
P1696
TYPICAL CHARACTERISTICS(Cont.)
Shutdown Quiescent Current VON/OFF
Supply Voltage
LINEAR INTEGRATED CIRCUIT
Minimum Operating Supply Voltage VOUT=1.23V ILOAD =200mA
Current (uA)
Supply Voltage
Juntion Temperature
ON/OFF Threshold Voltage
Threshold Voltage
ON/OFF Current (Sinking) =40V -40< <125
Current (uA)
Junction Temperature
ON/OFF Voltage
Switch Frequency =20V, LOAD=2A Normalized TJ=25
Bias Current (nA)
Feedback Bias Current
Frequency (kHz)
Adjustable Version Only
Junction Temperature
Junction Temperature
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R103-035,B
P1696
LINEAR INTEGRATED CIRCUIT
assumes responsibility equipment failures that result from using products values that exceed, even momentarily, rated values (such maximum ratings, operating condition ranges, other parameters) listed products specifications products described contained herein. products designed life support appliances, devices systems where malfunction these products reasonably expected result personal injury. Reproduction whole part prohibited without prior written consent copyright owner. information presented this document does form part quotation contract, believed accurate reliable changed without notice.
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R103-035,B

150KHZ, STEP-DOWN DC/DC CONVERTER P1696 series step-down switchin

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