assignment: Input Output Ground Feedback Enable Step Down Switchi
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TS2596
assignment: Input Output Ground Feedback Enable
Step Down Switching Voltage Regulator
150KHz Oscillating Frequency Output Current Enable Input Control
General Description
TS2596 Series step-down switching regulators with required active functions. capable driving load with excellent line load regulations. These devices available fixed output voltages 3.3V, adjustable output version. TS2596 series operates switching frequency 150kHz thus allowing smaller sized filter components than what would needed with lower frequency switching regulators. substantially only reduces area board size also size heat sink, some cases heat sink required. tolerance output voltage within specified input voltages output load conditions guaranteed. Also, oscillator frequency accuracy within ±10%. External shutdown included. Featuring 70µA (typical) standby current. output switch includes cycle-by-cycle current limiting, well thermal shutdown full protection under fault conditions. This series offered 5-pin TO-263, TO-220 package.
Features
Guaranteed output current 3.3V, adjustable versions Wide input voltage range, Internal oscillator 150KHz fixed frequency Wide adjust version output voltage range, from 1.23V max. over line load conditions. standby current, typ. 70µA, shutdown mode Requires only external components Thermal shutdown current limit protection product enhancement tested
Ordering Information
Part
TS2596CZ5xx TS2596CZ5 TS2596CM5xx TS2596CM5 TO-263-5L
Operating Temp. (Ambient)
Package
TO-220-5L
Note: Where denotes voltage option, available 3.3V. Leave blank adjustable version. Contact factory additional voltage options.
Applications
Monitors ADD-ON Cards Switching Regulators High Efficiency Step-Down Regulators Efficient Pre-regulator Linear Regulator
Absolute Maximum Rating
Input Voltage ENABLE Input Voltage Power Dissipation Operating Junction Temperature Range Storage Temperature Range Lead Soldering Temperature (260
(operate) TSTG
-0.3V Internal Limited +125 +150
TS2596
2003/12 rev.
Thermal Performance
Condition
Thermal Resistance Junction Ambient Thermal Resistance Junction Case
Symbol
Limits
Unit
Recommended Operating Conditions
Condition
Input Voltage ENABLE Input Voltage
Symbol
(operate)
Limits
Unit
Block Diagram
Electrical Characteristics
12V, 500mA, unless otherwise specified.
Parameter TS2596-3.3V
Output Voltage (Note Efficiency
Conditions
0.2A 5.07V (Figure Vin=12V, IL=3A
Unit
0.96|Vo|
1.04|Vo|
TS2596-5V
Output Voltage (Note Efficiency 0.2A (Figure Vin=12V, IL=3A 0.96|Vo| -5.0 1.04|Vo|
TS2596
2003/12 rev.
Electrical Characteristics (Continued)
12V, 500mA, unless otherwise specified.
TS2596 Adjustable
Feedback Voltage (Note Efficiency 0.2A 40V, Vout=5V (Figure Vin=12V, Vout=5V, IL=3A 0.96|Vo| -1.23 1.04|Vo|
Output Voltage Version (Vin= 12V, 500mA)
Oscillator Frequency (Note Quiescent Current (Note Standby Current Saturation Voltage (Note Feedback Bias Current Duty Cycle (Note Current Limit (Note 2)(Note Output Leakage Current (Note ENABLE Threshold Voltage ENABLE Input Current VOUT=0V VOUT=-1V (VOUT=0V) VIL(VOUT=Normal Output Voltage) (ENABLE =5V) (ENABLE =0V) ENABLE ILOAD=3A VOUT=5V (Adj. Version only) Operating (ON) -2.0 -150 -0.6
Note External components such catch diode, inductor, input output capacitors affect switching regulator system performance. Refer Application information details. Note oscillator frequency reduces when second stage current limit activated. amount reduction determined severity current over load. Note these parameters, removed from VOUT connected +12V force output transistor OFF. Note VOUT sourcing current. diode, inductor capacitor connected VOUT. Note removed from VOUT connected
TS2596
2003/12 rev.
Typical Application Circuit
Figure Fixed Voltage Version
Figure Adjustable Voltage Version
Figure filter Output Ripple
TS2596
2003/12 rev.
Application Data
Quick Design Component Selection Table Fixed Output
Input Output Condition
Output Load current Max. Input voltage
Inductor
Inductance (uH) Current
Output Capacitor
Nichicon series Sprague 595D series
Quick Design Component Selection Table Adjustable Output
Input Output Condition
Output
Output Capacitor
Nichicon series Sprague 595D series
Feedforword Capacitor
Value Unit
Schottky Diode Selection Table
Reverse Voltage
Forward Rectified Current (4~6A)
Surface Mount -SK53C SK54C Through Hole SR502 SR503 SR504
(Taiwan Semiconductor Part Number)
TS2596
2003/12 rev.
TO-220-5L Mechanical Drawing
TO-220 DIMENSION MILLIMETERS INCHES 10.00 3.240 2.440 0.260 1.570 13.31 4.475 1.170 27.60 2.175 0.297 8.280 6.010 14.29 10.50 4.440 2.940 1.020 1.830 14.13 5.225 1.370 29.44 2.925 0.477 8.800 6.510 15.31 0.394 0.128 0.096 0.010 0.062 0.524 0.176 0.046 1.087 0.086 0.012 0.326 0.237 0.563 0.413 0.175 0.116 0.040 0.072 0.556 0.206 0.054 1.159 0.115 0.019 0.346 0.256 0.603
TO-263-5L Mechanical Drawing
TO-263 DIMENSION MILLIMETERS INCHES 10.220 10.260 0.402 0.404 14.600 15.870 0.575 0.625 0.750 0.770 0.030 0.030 1.573 1.827 0.062 0.072 4.560 4.570 0.179 0.180 1.240 1.270 0.049 0.050 2.280 2.790 0.090 0.110 0.280 0.320 0.011 0.013 8.240 8.280 0.324 0.326 1.540 1.800 0.060 0.071
TS2596
2003/12 rev.
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