Document
NJM7900
3-TERMINAL NEGATIVE VOLTAGE REGULATOR
■ GENERAL DESCRIPTION The NJM7900 series of Monolithic 3-Terminal Negative Voltage
Regulators are constructed using the New JRC Planar epitaxial process. These negative regulators are intended as complements to the popular NJM7800 series of positive voltage regulators, and they are available in the same voltage options from –5 to –24V.
The NJM7900 series employ internal current limiting, safe area protection, and thermal shutdown, making the virtually indestructible.
■ PACKAGE OUTLINE
1. COMMON 2. IN 3. OUT
■ FEATURES
Internal Short Circuit Current Limit
Internal Thermal Overload Protection
Excellent Ripple Rejection
Guarantee'd 1.5A Output Current
Output Capacitor recommended electrolytic capacitor
Package Outline
TO-220F
Bipolar Technology
NJM7900FA (note) The radiation fin is connected to Pin 2.
■ EQUIVALENT CIRCUIT
Ver.2014-07-31
-1-
NJM7900
■ ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
Power Dissipation Operating Junction Temperature Operating Temperature Range Storage Temperature Range
VIN
PD Tj Topr Tstg
MAXIMUM RATINGS
7905 to7909 7912 to7915 7918 to7924
16(TC≤70ºC)
-40 to +150
-40 to +85
-40 to +150
-35 -35 -40
■ THERMAL CHARACTERISTICS
Thermal Resistance
Junction-to-Ambient Temperature Junction-to-case
θja θjc
60 5
ºC/W
(Ta=25ºC)
UNIT
V
W ºC ºC ºC
■ ELECTRICAL CHARACTERISTICS (Tj25 C, CIN2.2μF, CO1.0μF) Measurement is to be conduced in pulse testing
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX. UNIT
NJM7905FA
Output Voltage Line Regulation Load Regulation
VO ΔVO - VIN ΔVO - IO
VIN-10V, IO0.5A VIN-7 to -25V, IO0.5A VIN-10V, IO0.005 to 1.5A
-4.8 -5.0 -5.2 V - 5 50 mV - 50 80 mV
Quiescent Current
Average Temperature Coefficient of Output Voltage
IQ ΔVO/ΔT
VIN-10V, IO0mA VIN-10V, IO5mA
- 2.2 5.0 mA - -0.4 - mV/ºC
Ripple Rejection Output Noise Voltage
RR VIN-10V, IO0.5A, ein2VP-P, f120Hz VNO VIN-10V, IO0.5A , BW10Hz to 100kHz,
54 60 - dB - 100 - μV
NJM7906FA
Output Voltage Line Regulation Load Regulation
VO ΔVO - VIN ΔVO - IO
VIN-11V, IO0.5A VIN-8 to -25V, IO0.5A VIN-11V, IO0.005 to 1.5A
-5.75 -
-6.0 -6.25
V
5 60 mV
50 90 mV
Quiescent Current
Average Temperature Coefficient of Output Voltage
IQ ΔVO/ΔT
VIN-11V, IO0mA VIN-11V, IO5mA
- 2.2 5.0 mA - -0.5 - mV/ºC
Ripple Rejection Output Noise Voltage
RR VIN-11V, IO0.5A, ein2VP-P, f120Hz VNO VIN-11V, IO0.5A , BW10Hz to 100kHz,
54 60 - dB - 110 - μV
-2-
Ver.2014-07-31
NJM7900
■ ELECTRICAL CHARACTERISTICS (Tj25 C, CIN2.2μF, CO1.0μF) Measurement is to be conducted in pulse testing.
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX. UNIT
NJM7908FA
Output Voltage
VO
Line Regulation
ΔVO - VIN
Load Regulation
ΔVO - IO
Quiescent Current
IQ
Average Temperature Coefficient of Output Voltage
ΔVO/ΔT
VIN-14V, IO0.5A VIN-10.5 to -25V, IO1.5A VIN-14V, IO0.005 to 0.5A VIN-14V, IO0mA
VIN-14V, IO5mA
-7.7 -8.0 -8.3 .