Document
Semiconductor
S79xxPI
Fixed-Negative-Voltage Regulator
Descriptions
This series of fixed-negative-voltage monolithic integrated-circuit voltage regulators is designed to complement series S7800 in a wide range of applications. These applications include on-card regulator for elimination of noise and distribution problems associated with single point regulations. Each of these regulators can deliver up to 1.0 amperes of output current. The internal current Limiting and thermal shutdown features of these regulators make them essentially immune to overload. In addition to use as fixed-voltage regulators, these device can be used with external components to obtain adjustable output voltages and also as the power pass element in precision regulators.
Features
• Output Current UP to 1.0A • Internal Thermal Overload Protection • Internal Short-Circuit Current Limiting • No External Components • Output Transistor Safe-Area Compensations
Ordering Information
Type NO. S79xxPI Marking S79□□PI Package Code TO-220F
□□:Voltage Code (05:-5V, 08:-8V, 09:-9V,12:-12V,15:-15V)
Outline Dimensions
unit :
mm
PIN Connections 1. GND 2. Input 3. Output
KSI-2026-002 1
S79xxPI
Absolute Maximum Ratings
Characteristic
Operating Input voltage Power Dissipation (Tc=25℃) Power Dissipation (without Heatsink) Operating Junction Temperature Storage Temperature
Ta=25°C
Symbol
VIN PD PD TJ TSTG
Ratings
-35 20.8 2.0 -30 ~ 125 -55 ~ 150
Unit
V W W °C °C
Electrical Characteristics
(TJ = 0 to 125℃, Vin= -10V, Iout=500mA, unless otherwise specified.)
Characteristic
Symbol
Test Condition
Tj =25℃
IOUT=5mA ~ 1A VIN=-7.0V ~ -20V, PD≤ 15W VIN=-7.0V ~ -25V VIN=-8.0V ~ -12V IOUT=5mA ~ 1.0A IOUT=250mA ~ 750mA
S7905PI Min.
-4.8 -4.75 -
Typ.
-5.0 -5.0 12.5 4 15 5 1.5 0.15 0.08 125 60 2.0 -0.4 2.1
Max.
-5.2
Unit
Output Voltage
VOUT
V -5.25 50 15 100 50 2.0 0.5 0.5 uVrms dB V mV/°C A mA mA mV
Line Regulation
ÌVOUT
Tj =25℃
mV
Load Regulation
ÌVOUT IB ÌIB VN RR VD of TCVO IPK
Tj =25℃ Tj =25℃
Quiescent Current Quiescent Current Change
VIN = -7.0V ~ -25V IOUT = 5mA ~ 1A
Output Noise Voltage Ripple Rejection Ratio Dropout Voltage Temperature coefficient output Voltage Drift Peak Output Current
f=10Hz ~ 100KHz
Tj =25℃
54 -
f=120Hz, VIN =-8.0V ~ -18V IOUT=1A IOUT=5mA
Tj =25℃
Tj =25℃
-
*Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into separately.
KSI-2026-002
2
S79xxPI
Electrical Characteristics
(TJ = 0 to 125℃, Vin= -14V, Iout=500mA, unless otherwise specified.)
Characteristic
Symbol
Test Condition
Tj =25℃
IOUT=5mA ~ 1A VIN=-10.5V ~ -23V, VIN=-10.5V ~ -25V VIN=-11.0V ~ -17V IOUT=5mA ~ 1.0A IOUT=250mA ~ 750mA PD≤ 15W
S7908PI Min.
-7.7 -7.6 -
Typ.
-8.0 -8.0 12.5 4 15 5 1.5 0.15 0.08 200 60 2.0 -0.6 2.1
Max.
-8.3
Unit
Output Voltage
VOUT
V -8.4 160 80 160 80 2.0 1.0 0.5 uVrms dB V mV/°C A mA mA mV
Line Regulation
ÌVOUT
Tj =25℃
mV
Load Regulation
ÌVOUT IB ÌIB VN RR VD of TCVO IPK
Tj =25℃ Tj =25℃
Quiescent Current Quiescent Current Change
VIN = -10.5V ~ -25V IOUT = 5mA ~ 1A
Output Noise Voltage Ripple Rejection Ratio Dropout Voltage Temperature coefficient output Voltage Drift Peak Output Current
f=10Hz ~ 100KHz
Tj =25℃
54 -
f=120Hz, VIN =-11.5V ~ -21.5V IOUT=1A IOUT=5mA
Tj =25℃ Tj =25℃ Tj =25℃
* Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into separately.
KSI-2026-002
3
S79xxPI
Electrical Characteristics
(TJ = 0 to 125℃, Vin= -15V, Iout=500mA, unless otherwise specified.)
Characteristic
Symbol
Test Condition
Tj =25℃
IOUT=5mA ~ 1A VIN=-11.5V ~ -23V, VIN=-10.5V ~ -25V VIN=-110V ~ -17V IOUT=5mA ~ 1.A IOUT=250mA ~ 750mA PD≤ 15W
S7909PI Min.
-8.70 -8.60 -
Typ.
-9.0 -9.0 10 5 12 4 3 0.1 0.08 175 60 2.0 -0.4 2.1
Max.
-9.30
Unit
Output Voltage
VOUT
V -9.40 180 90 180 90 6 1.0 0.5 uVrms dB V mV/°C A mA mA mV
Line Regulation
ÌVOUT
Tj =25℃
mV
Load Regulation
ÌVOUT IB ÌIB VN RR VD of TCVO IPK
Tj =25℃ Tj =25℃
Quiescent Current Quiescent Current Change
VIN = -11.5V ~ -25V IOUT = 5mA ~ 1A
Output Noise Voltage Ripple Rejection Ratio Dropout Voltage Temperature coefficient output Voltage Drift Peak Output Current
f=10Hz ~ 100KHz
Tj =25℃
54 -
f=120Hz, VIN =-9.0V ~ -19V IOUT=1A IOUT=5mA
Tj =25℃ Tj =25℃ Tj =25℃
* Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into separately.
KSI-2026-002
4
S79xxPI
Electrical Characteristics
(TJ = 0 to 125℃, Vin= -19V, Iout=500mA, unless otherwise specified.)
Characteristic
Symbol
Test Condition
Tj =25℃
IOUT=5mA ~ 1A VIN=-14.5V ~ -27V, VIN=-14.5V ~ -30V VIN=-16.0V ~ -22V IOUT=5mA ~ 1.0A IOUT=250mA ~ 750mA PD≤ 15W
S7912PI Min.
-11.5 -11.4 -
Typ.
-12.0 -12.0 5 3 15 5 2.0 0.04 0.08 300 60 2.0 -0.8 2.1
Max.
-12.5
Unit
Output Voltage
VOUT
V .