23213
Shantou Huashan Electronic Devices Co.,Ltd.
3-TERMINAL FIXED VOLTAGE REGULATOR
H79L12
█ Description
H79L12 is the three terminal negative Regulators with single chip, T O-92 and in a wide range of applications 。It supplies fixed output voltages of -12V, deliver over 100mA output current ,and employs internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible.
█ Features
l Output current up to 100mA l Low noise 1―GND 2―INPUT 3―OUTPUT
l
High Ripple Rejection
l Power Amplify Output Protection l Thermal Overload Protection l Current Overload Protection and Shor t Circuit Protection
█ Absolute Maximum Ratings(Ta=25℃)
VIN——Input Voltage……………………………………………………… -35V T amb ——Operating Temperature Range……………………………… -20~85℃ T stg ——Storage Temperature Range………………………………… -55~150℃ T j ——Junction Temperature………………………………………… -55~150℃
█ Internal Block Diagram
Starting Circuit Reference V oltage Error Amplifier
INPUT
3
Current Generator SOA Protection
Series Bypass Element
OUTPUT
1
Thermal Protection circuit
2
GND
23213
Shantou Huashan Electronic Devices Co.,Ltd.
3-TERMINAL FIXED VOLTAGE REGULATOR
H79L12
█Typical Application █ ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, VIN =-19V,IO =40mA,0℃≤Tj ≤125℃,CIN=0.33μF,COUT=0.1μF) Symbol Parameter Min. Typ. Max. Unit Tj =25℃ V -27V ≤ VIN ≤ -14.5V,1mA ≤ IO ≤ 40Ma -11.4 ΔVO Line Regulation
H79L12
Conditions
-11.5 -12.0 -12.5 VO Output Voltage -11.4
-12.6 -12.6 250 200 100 50 6.5 1.5 0.1
VIN =-19V,1mA≤IO ≤70mA
mV
Tj =25℃, -27V≤VIN ≤-14.5V Tj =25℃, -27V≤VIN ≤-16V
ΔVO
Load Regulation Quiescent Current Quiescent Current Change Output Noise Voltage Ripple Rejection Dropout Voltage
mV
Tj =25℃,1mA≤IO ≤100mA Tj =25℃,1mA≤IO ≤40mA
IQ ΔIQ VN RR VD
mA mA
Tj =25℃ -27V≤VIN ≤-16V 1mA≤IO ≤40mA
37
80 42 1.7
μV Tj =25℃,10Hz≤f≤100kHz dB V Tj =25℃, -25V≤VIN ≤-15V, f=120Hz Tj =25℃
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