Document
TO-220
TS7900 Series
3-Terminal Fixed Negative Voltage Regulator
ITO-220
Pin Definition: 1. Ground 2. Input (tab) 3. Output
General Description
The TS7900 series of fixed output negative voltage regulators are intended as complements to the popular TS7800 series device. These negative regulators are available in the same seven-voltage options as the TS7900 devices. In addition, one extra voltage option commonly employed in MECL systems is also available in the negative TS7900 Series. Available in fixed output voltage options from -5.0 to -24 volts, these regulators employ current limiting, thermal shutdown, and safe-area compensation--making them remarkably rugged under most operating conditions. With adequate heat sinking they can deliver output currents in excess of 1 ampere.
Features
● Output Voltage: -5 & -12V ● Output current up to 1A ● No external components required ● Internal thermal overload protection ● Internal short-circuit current limiting ● Output transistor safe-area compensation ● Output voltage offered in 4% tolerance
Ordering Information
Part No.
Package
Packing
TS79xxCZ C0
TO-220
50pcs / Tube
TS79xxCZ C0G
TO-220
50pcs / Tube
TS79xxCI C0
ITO-220
50pcs / Tube
TS79xxCI C0G
ITO-220
50pcs / Tube
Note: Where xx denote voltage option
05=-5V, 12=-12V
“G” denote for Green Product Halogen Free
Standard Application Circuit
A common ground is required between the input and the output voltages. The input voltage must remain typically 2.0V above the output voltage even during the low point on the Input ripple voltage. XX = these two digits of the type number indicate voltage. * = Cin is required if regulator is located an appreciable distance from power supply filter. ** = Co is not needed for stability; however, it does improve transient response.
Absolute Maximum Rating (Ta = 25oC unless otherwise noted)
Parameter
Symbol
Input Voltage Power Dissipation Operating Junction Temperature Range Junction Temperature Storage Temperature Range
Thermal Resistance - Junction to Case
Thermal Resistance - Junction to Ambient Note: * Follow the derating curve
TO-220 ITO-220 TO-220 ITO-220
VIN PD TJOPR TJ TSTG
RӨJC
RӨJA
Limit
-35 Internal Limited
0 ~ +125 +150
-65~+150 3 5 50 60
Unit
V W oC oC oC
oC/W
oC/W
1/6 Version: F13
TS7900 Series
3-Terminal Fixed Negative Voltage Regulator
TS7905 Electrical Characteristics
(Vin= -10V, Iout=500mA, 0oC≤Tj≤125oC, Cin=0.33uF, Cout=0.1uF; unless otherwise specified.)
Parameter
Symbol
Test Condition
Min Typ
Tj=25oC
-4.80 -5
Output voltage
Vout
-7.5V≤Vin≤-20V, 10mA≤Iout≤1A, PD≤15W
-4.75 -5
Line Regulation
REGline
Tj=25oC -7.5V≤Vin≤-25V -8V≤Vin≤-12V
-- 3 -- 1
Load Regulation Quiescent Current
REGload Iq
Tj=25oC 10mA≤Iout≤1A 250mA≤Iout≤750mA
Iout=0, Tj=25oC
----
15 5 4
Quiescent Current Change Output Noise Voltage
-7.5V≤Vin≤-25V ∆Iq
10mA≤Iout≤1A Vn 10Hz≤f≤100KHz, Tj=25oC
-- --- --- 40
Ripple Rejection Ratio Voltage Drop
RR Vdrop
f=120Hz, -8V≤Vin≤-18V Iout=1A, Tj=2.