Step-up, step-down or inverting switching regulators
n Output adjustable from 1.25V to 40V
n Peak currents to 1.5A without external transistors
n Operation from 2.5V to 40V input
n Low standby current drain
n 80 dB line and load regulation
n High gain, high current, independent op amp
n Pulse width modulation with no double pulsing
ADJUSTABLE OUTPUT CURRENT UP TO 2 A (GUARANTEED UP TO Tj = 150 °C) ADJUSTABLE OUTPUT VOLTAGE DOWN TO 2.85 V INPUT OVERVOLTAGE PROTECTION (UP TO 60 V, 10 ms) SHORT CIRCUIT PROTECTION OUTPUT TRANSISTORS.O.A.PROTECTION THERMAL OVERLOADPROTECTION LOWBIAS CURRENT ON REGULATIONPIN LOWSTANDBY CURRENT DRAIN
2.5A OUTPUT CURRENT
5.1V TO 40V OPUTPUT VOLTAGERANGE
PRECISE (± 2%) ON-CHIP REFERENCE
HIGH SWITCHING FREQUENCY VERY HIGH EFFICIENCY (UP TO 90%) VERY FEW EXTERNAL COMPONENTS SOFT START INTERNAL LIMITING CURRENT THERMAL SHUTDOWN
■ 3.3V, 5V, 12V, 15V, and adjustable output versions
■ Adjustable version output voltage range,
1.23V to 37V (57V for HV version) ア4% max over line and load conditions
■ Guaranteed 1A output current
■ Wide input voltage range, 40V up to 60V for HV version
■ Requires only 4 external components
■ 52 kHz fixed frequency internal oscillator
■ TTL shutdown capability, low power standby mode
■ High efficiency
■ Uses readily available standard inductors
■ Thermal shutdown and current limit pr
3.3V, 5V, 12V, 15V, and adjustable output versions
n Adjustable version output voltage range,
1.23V to 37V (57V for HV version) ±4% max over
line and load conditions
n Guaranteed 3A output current
n Wide input voltage range, 40V up to 60V for
HV version
n Requires only 4 external components
n 52 kHz fixed frequency internal oscillator
n TTL shutdown capability, low power standby mode
n High efficiency
n Uses readily available standard inductors
n Thermal shutdown and current limit protection
n P+ Product Enhancement tested
3.3V, 5V, 12V, and adjustable output versions
n Adjustable version output voltage range, 1.2V to 37V
±4% max over line and load conditions
n Available in TO-220 and TO-263 packages
n Guaranteed 3A output load current
n Input voltage range up to 40V
n Requires only 4 external components
n Excellent line and load regulation specifications
n 150 kHz fixed frequency internal oscillator
n TTL shutdown capability
n Low power standby mode, IQ typically 80 μA
n High efficiency
n Uses readily available standard inductors
n Thermal shutdown and current limit protection
Dropout voltage typically 0.5V @IO = 1A
■ Output current in excess of 1A
■ Output voltage trimmed before assembly
■ Reverse battery protection
■ Internal short circuit current limit
■ Mirror image insertion protection
■ P+ Product Enhancement tested
Output Current In Excess of 1.5A • Output Adjustable Between 1.2V and 37V • Internal Thermal Overload Protection • Internal Short Circuit Current Limiting • Output Transistor Safe Operating Area Compensation
Output Current in Excess of 1.5A
• Output Voltage Adjustable Between -1.2V and -37V
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Output Transistor Safe Area Compensation
• Floating Operation for High Voltage Applications
Output Adjustable Between 1.2V and 33V
• Guaranteed 3A Output Current
• Internal Thermal Overload Protection
• Load Regulation (Typ: 0.1%)
• Line Regulation (Typ: 0.015%/V)
• Internal Short Circuit Current Limit
• Output Transistor Safe-Area Compensation
150 mA output current without external pass transistor
n Output currents in excess of 10A possible by adding
external transistors
n Input voltage 40V max
n Output voltage adjustable from 2V to 37V
n Can be used as either a linear or a switching regulator