Output Voltage Range Adjustable from Output Current Capability Input R

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Output Voltage Range Adjustable from Output Current Capability Input R

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adjustable terminal positive -voltage regulators capable supplying 1.5A over differential voltage range 3Vto 40V. They exceptionally easy require only external resistors output voltage. Both input output regulation better than standard fixed regulators.In addition higher performance than fixed regulators, these regulators offer full overload protection available only integrated circuits. Included chip current limit, thermal overload protection, safe-area protection. overload protection circuitry remains fully functional even adjustment terminal disconnected. Normally, capacitors needed unless device situated from input filter capacitors which case input bypass needed. optional output capacitor added improve transient response.The primary applications each these regulators that programmable output regulator, connecting fixed resistor between adjustment terminal output terminal, each device used precision current regulator. Even though regulator floating sees only input-to-output differential voltage, these devices regulate output voltages that would cause maximum-rated differential voltage exceeded output became shorted ground recommended.
Output Voltage Range Adjustable from Output Current Capability Input Regulation Typically 0.01 Input Volt Change Output Regulation Typically Peak Output Current Constant Over Range Regulator Popular 3-Lead TO-220 Package Ripple Rejection Typically Temperature
Typical application data
(see Note
(see Note
(see Note
Note input bypass capacitor recommended regulator from filter capacitors. Note output capacitor improves transient response optional. Note Output voltage calculated from equation:
Vref
Vref equals difference between output adjustment terminal
BEIJING ESTEK ELECTRONICS CO.,LTD
Absolute Maximum Ratings
OVER OPERATING TEMPERATURE RANGE (UNLESS OTHERWISE NOTED) Parameter Maximum Units Input-to-output differential voltage, Continuous total dissipation °free-air temperature Continuous total dissipation below) °case temperature Operating free-air, case, virtual junction temperature range Storage temperature range
Recommended Operating Conditions
Parameter Output current, Operating virtual junction temperature, 1500 Units
Electrical Characteristics
Electrical Characteristics over recommended ranges operating virtual junction temperature (unless other wise noted) (Note Parameter Test Conditions* Input regulation (Note Ripple rejection VI-V0=3 (Note Vo=10 f=120 Vo=10 f=120 10-µ capacitor between ground Output regulation (See Note (Note 0.01 0.02 0.04 0.07 Units
Output voltage change with temperature
Output voltage long-term drift (Note Output noise voltage Minimum output current maintain regulation Peak output current Adjustment-terminal current Change adjustment-terminal current Reference voltage (output
After 1000 VI-Vo kHz, =25° VI-Vo VI-Vo VI-Vo =25° VI-Vo=2.5 VI-Vo lo=10 0.15
0.003 1.25
BEIJING ESTEK ELECTRONICS CO.,LTD
Unless otherwise noted, these specifications apply following test conditions: conditions shown MAX, appropriate value specified under recommended operating conditions. Note characteristics measured with capacitor across input capacitor across output. Note Input regulation expressed here percentage change output voltage change input. Note Pulse testing techniques used maintain junction temperature close ambient tempe rature possible. Thermal effects must taken into account separately. Note Since long-term drift cannot measured individual devices prior shipment, this specification intended guarantee warranty. engineering estimate average drift expected from lot.
Ordering Information
RDERING LM317 KING LM317
Address
Postalcode:100039 Tel: 86-010-58895780 Http://www.estek.com.cn Email:sales@estek.com.cn
6A06-6A07 6A07,Changyin Office Building ,No.88,Yong Ding Road,Hai Dian District ,Beijing
010-58895793
No:01-060808
BEIJING ESTEK ELECTRONICS CO.,LTD

Output Voltage Range Adjustable from Output Current Capability Input R

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