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C O M 117T
(COTS) COMMERCIAL OFF-THE-SHELF 1.5 AMP POSITIVE ADJUSTABLE VOLTAGE REGULATOR IN TO-257 PA C K A G E
Three Terminal, Precision Adjustable Positive Voltage Regulator In TO-257 Package
FEATURES
* Built In Thermal Overload Protection * Short Circuit Current Limiting
DESCRIPTION
These three terminal positive regulators are supplied in hermetically sealed packages. All protective features are designed into the circuit, including thermal shutdown, current-limiting, and safe-area control. With heat sinking, these devices can deliver up to 1.5 amps of output current. The unit also features output voltages that can be fixed from 1.2 volts to 37 volts using external resistors.
ABSOLUTE MAXIMUM RATINGS Tc @
25C
Power Dissipation TO27 .............. ..... ....... ........................... -5. . . . 20 W Input - Output Voltage Diffrnil.................................... 4 eeta 0 V Operating Junction Te p r t r R n e . . . . . . . . . . . . . . . . . . . . . - 5 t + 1 0 C meaue ag 5C o 5 Storage Te p r t r R n e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 6 t + meaue ag 5C o 150C Lead Te p r t r ( o d r n 1 s c n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . meaue Sleig 0 eod) . 30CTemlRssac,Jnto t Cs: ....... ...................... 0 hra eitne ucin o ae. . ....../ 42CW Mxmm Otu Cret . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . aiu upt urn: .1.5 A Recommended Operating Conditions: Output Vo t g R n e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . t 3 V C lae ag 12 o 7 D Ambient Operating Temperature Range (TA ) . . . . . . . . . . . . . - 5 t + 1 5 C . . 5C o 2 Input Vo t g R n e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 t 4 . 5 V C lae ag .5 o 12 D
3.3
33 - 1 .
C O M 117T
ELECTRICAL CHARACTERISTICS
Parameter Reference Voltage Symbol V REF
-55C
TA
125C, IL = 8mA (unless otherwise specified)
Min. 1.20 Max. 1.30 1.30 1.30 9 23 15 15 15 15 16 mV mV mV V Unit
Test Conditions V DIFF = 3 0 , TA = 25C .V V DIFF = 3.3V V DIFF = 40V
* * * * *
1.20 1.20 9 -3 2 -5 1 -5 1 -5 1 -5 1 -6 1
Line Regulation (Note 1) Load Regulation (Note 1)
R LINE
3.0V
VDIFF 3.3V
40V, Vout = Vrf,TA = 25C e VDIFF 40V, Vout = Vrf e IL 1.5A, TA = 25C IL 1.5A
R LOAD
V DIFF = 3.0V, 10mA
V DIFF = 3.3V, 10mA V DIFF = 40V, 10mA IL
300mA, TA = 25C IL 195mA
V DIFF = 40V, 10mA Thermal Regulation V RTH
V i = 1 . V IL = 1.5A 46, n P d = 20 Watts, t = 20 ms, TA =25C
Ripple Rejection (Note 2) Adjustment Pin Current
RN
f = 120 Hz, Vout = Vrf e C Adj = 10 F
*
66
dB
Idj A
V DIFF = 3 0 , TA = 25C .V V DIFF = 3.3V V DIFF = 40V
100
* *
5 1.5A
100 100 5 5 5 5 5 5 50 .
A
Adjustment Pin Current Change
IAdj
V DIFF = 3.0V, 10mA
IL
1.5A, TA = 25C IL
V DIFF = 3.3V, 10mA V DIFF = 40V, 10mA IL
300mA, TA = 25C IL 195mA
V DIFF = 40V, 10mA 3.0V VDIFF 3.3V Miminum Load Current I Lmin
* * * * * * *
5 5 5 5 5
A
40V, TA = 25C V DIFF 40V
V DIFF = 3.0V, VO U T = 1.4V (forced) V DIFF = 3.3V, VO U T = 1.4V (forced) V DIFF = 40V, VO U T = 1.4V (forced)
50 . 50 . 15 . 0.18 35 . 15 .
mA
C r e t L it u r n im (Note 2)
I CL
V DIFF = 15V V DIFF = 40V, TA = 25C
A
3.3
Notes: 1 Load and Line Regulation are specified at a constant junction temperature. Pulse testing with low duty cycle is used. . Changes in output voltage due to heating effects must be taken into account separately. 2 I nttse,salb gaate t teseiidlmt. . f o etd hl e urned o h pcfe iis 3 The *denotes the specifications which apply over the full operating temperature range. .
MECHANICAL OUTLINE TO-257AA
.420 .410 .200 .190 .045 .035 .665 .645 .537 .527 .430 .410 .038 MAX.
PIN CONNECTION
.150 .140
Front View Pn1 i : Adjust Pn2 i : Output Pn3 i : Input Tab: Isolated
.750 .500
.005
123
.035 .025 .100 TYP. .120 TYP.
205 Crawford Street, Leominster, MA 01453 USA (978) 534-5776 FAX (978) 537-4246

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