TS7900 Series
3-Terminal Fixed Negative Voltage Regulator
1/6 Version: F13
TO
-
220
ITO
-
220
General Description
The TS7900 series of fixed output negative voltage regulators are intended as complements to the popular TS78
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
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.
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
Absolute Maximum Rating (Ta = 25oC unless otherwise noted)
Parameter Symbol Limit Unit
Input Voltage VIN -35 V
Power Dissipation PD Internal Limited W
Operating Junction Temperature Range TJOPR 0 ~ +125 oC
Junction Temperature TJ +150 oC
Storage Temperature Range TSTG -65~+150 oC
Thermal Resistance - Junction to Case TO-220 RӨJC 3 oC/W
ITO-220 5
Thermal Resistance - Junction to Ambient TO-220 RӨJA 50 oC/W
ITO-220 60
Note: * Follow the derating curve
Pin
Definition
:
1. Ground
2. Input (tab)
3. Output
TS7905CI C0 / TS7912CI C0
TS7905CZ C0 / TS7905CZ C0G
TS7912CZ C0 / TS7912CZ C0G
Not Recommended
TS7900 Series
3-Terminal Fixed Negative Voltage Regulator
2/6 Version: F13
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 Max Unit
Output voltage Vout Tj=25oC -4.80
-5 -5.20
V
-7.5V≤Vin≤-20V,
10mA≤Iout≤1A, PD≤15W -4.75
-5 -5.25
Line Regulation REGline Tj=25oC
-7.5V≤Vin≤-25V -- 3 100
mV
-8V≤Vin≤-12V -- 1 50
Load Regulation REGload Tj=25oC
10mA≤Iout≤1A -- 15 100
250mA≤Iout≤750mA
-- 5 50
Quiescent Current Iq Iout=0, Tj=25oC -- 4 8 mA
Quiescent Current
Change ∆Iq -7.5V≤Vin≤-25V -- -- 1.3
10mA≤Iout≤1A -- -- 0.5
Output Noise Voltage Vn 10Hz≤f≤100KHz, Tj=25oC -- 40 -- µV
Ripple Rejection Ratio RR f=120Hz, -8V≤Vin≤-18V 62 74 -- dB
Voltage Drop Vdrop Iout=1A, Tj=25oC -- 2 -- V
Output Short Circuit
Current Ios Tj=25oC -- 750 -- mA
Peak Output Current Io peak Tj=25oC -- 2.1 -- A
Temperature Coefficient
of Output Voltage ∆Vout/ ∆Tj Iout=10mA, 0oC≤Tj≤125oC -- -0.1 -- mV/ oC
TS7912 Electrical Characteristics
(Vin= -19V, Iout=500mA, 0oC≤Tj≤125oC, Cin=0.33uF, Cout=0.1uF; unless otherwise specified.)
Parameter Symbol Test Condition Min Typ Max Unit
Output Voltage Vout Tj=25oC -11.53
-12 -12.48
V
-14.5V≤Vin≤-27V,
10mA≤Iout≤1A, PD ≤15W -11.42
-12 -12.60
Line Regulation REGline Tj=25oC
-14.5V≤Vin≤-30V -- 10 240
mV
-15V≤Vin≤-19V -- 3 120
Load Regulation REGload Tj=25oC
10mA≤Iout≤1A -- 12 240
250mA≤Iout≤750mA
-- 4 120
Quiescent Current Iq Tj=25oC, Iout=0 -- 4.3 8 mA
Quiescent Current
Change ∆Iq -14.5V≤Vin≤-30V -- -- 1
10mA≤Iout≤1A -- -- 0.5
Output Noise Voltage Vn 10Hz≤f≤100KHz, Tj=25oC -- 75 -- uV
Ripple Rejection Ratio RR f=120Hz, -15V≤Vin≤-25V 55 70 -- dB
Voltage Drop Vdrop Iout=1A, Tj=25oC -- 2 -- V
Output Short Circuit
Current Ios Tj=25oC -- 350 -- mA
Peak Output Current Io peak Tj=25oC -- 2.1 -- A
Temperature Coefficient
of Output Voltage ∆Vout/ ∆Tj Iout=10mA, 0oC≤Tj≤125oC -- -1 -- mV/ oC
Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature as
possible, and thermal effects must be taken into account separately.
This specification applies only for DC power dissipation permitted by absolute maximum ratings.
TS7905CI C0 / TS7912CI C0
TS7905CZ C0 / TS7905CZ C0G
TS7912CZ C0 / TS7912CZ C0G
Not Recommended
TS7900 Series
3-Terminal Fixed Negative Voltage Regulator
3/6 Version: F13
Electrical Characteristics Curve
Figure 1. Worse Case Power Dissipation as a
Function of Ambient Temperature
Figure 2. Peak Output Current as a Function of
Input-Output Differential Voltage
Figure 3. Ripple Rejection as a Function of
Frequency
Figure 4. Ripple Rejection as a Function of
Output Voltage
Figure 5. Output Voltage as a Function of
Junction Temperature
Figure 5. Output Voltage as a Function of
Junction Temperature
TS7905CI C0 / TS7912CI C0
TS7905CZ C0 / TS7905CZ C0G
TS7912CZ C0 / TS7912CZ C0G
Not Recommended
TS7900 Series
3-Terminal Fixed Negative Voltage Regulator
4/6 Version: F13
TO-220 Mechanical Drawing
Unit: Millimeters
Marking Diagram
XX
= Output Voltage
(05=-5V, 12=-12V)
Y
= Yea
r Code
M
= Month Code
(A=Jan, B=Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep,
J=Oct, K=Nov, L=Dec)
= Month Code for Halogen Free Product
(O=Jan, P=Feb, Q=Mar, R=Apl, S=May, T=Jun, U=Jul, V=Aug, W=Sep,
X=Oct, Y=Nov, Z=Dec)
L
= Lot
Code
CZ
= Package Code for TO
-220
TS7905CI C0 / TS7912CI C0
TS7905CZ C0 / TS7905CZ C0G
TS7912CZ C0 / TS7912CZ C0G
Not Recommended
TS7900 Series
3-Terminal Fixed Negative Voltage Regulator
5/6 Version: F13
ITO-220 Mechanical Drawing
Unit: Millimeters
Marking Diagram
XX
= Output Voltage
(05=-5V, 12=-12V)
Y
= Year Code
M
= Month Code
(A=Jan, B=Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep,
J=Oct, K=Nov, L=Dec)
= Month Code
for Halogen Free Product
(O=Jan, P=Feb, Q=Mar, R=Apl, S=May, T=Jun, U=Jul, V=Aug, W=Sep,
X=Oct, Y=Nov, Z=Dec)
L
= Lot Code
CI
= Package Code for ITO
-220
TS7905CI C0 / TS7912CI C0
TS7905CZ C0 / TS7905CZ C0G
TS7912CZ C0 / TS7912CZ C0G
Not Recommended
TS7900 Series
3-Terminal Fixed Negative Voltage Regulator
6/6 Version: F13
Notice
Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf,
assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, to
any intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of
sale for such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty,
relating to sale and/or use of TSC products including liability or warranties relating to fitness for a particular purpose,
merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify TSC for any damages resulting from such improper use or sale.
TS7905CI C0 / TS7912CI C0
TS7905CZ C0 / TS7905CZ C0G
TS7912CZ C0 / TS7912CZ C0G
Not Recommended