www.njr.com
Designated client product
This product will be discontinued its pr oduction in the near term.
And it is provided for customers currently in use only, with a time limit .
It can not be avail able for your new project. Please select other new or
existing products.
For more information, please contact our sales office in y our r eg ion.
New Japan Radio Co.,Ltd.
NJM317
-
1
-
Ver.2016-04-20
ADJUSTABLE 3-TERMINAL POSITIVE VOLTA GE REGULAT OR
■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE
The NJM317 is adjustable 3-t er minal positive voltage regulator IC.
It is capable of adjustment from typical 1.25V to 37V output volt age
range with two resistors. It is capable of supply ing in excess of 1.5A
with heat sink.
The NJM317 is suitable for the power supply for general purpose.
■ FEATURES
Operating Voltage (+4.25V to +40V)
Adjustable Output Down to 1.2V
Guarantee'd 1.5A Output Current
Line Regulation typica lly (0.01%/V)
Load Regulation typically (0.1%)
80dB Ripple Rejection
Package Outline TO -220F, T O-252
Bipolar Technology
■ EQUIVALENT CIRCUIT
NJM317F NJM317 DL1
1. Adjustment
2. Output
3. Input
NJM317
-
2
-
Ver.2016-04-20
■ ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER SYMBOL RATINGS UNIT
Input-Output Differ ential V oltage V
IN
- V
O
40 (T
C
=25ºC) V
Power Dissip ation PD TO-220F 16 (TC≤70ºC)
TO-252 10 (Tc≤25ºC)
1 (Ta≤25ºC) W
Operating Temperature Range (Junction)
(Ambient)
Topr (j)
T
opr
(a)
-40 to +150
-40 to +85 ºC
Storage Temperature Range T
stg
-50 to +150 ºC
■ THERMAL CHARACTERISTICS
TO-220F TO-252
Thermal Resistance Junction-To-Ambient θja 60 125 ºC/W
Junction-To-Case θjc 5 12.5
■ ELECTRICAL CHARACTERISTICS (VIN - VO 5V, I O=500mA, CIN=0.1μF, CO1μF, Tj25ºC)
Measurement is to be conducted in pulse testing.
PARAMETER SYMBOL
TEST C ONDITION MIN. TYP. MAX.
UNIT
Reference V ol tage
VREF
VREF-VIN
VREF-IO
3V ≤ (VIN - VO) ≤ 40V, IO=100mA
10mA ≤ IO ≤ 1.5A (TO-220F)
10mA ≤ I
O
≤ 500mA (TO- 252)
1.2
1.2
1.2
1.2
1.25
1.25
1.25
1.25
1.3
1.3
1.3
1.3
V
Reference V ol tage Thermal
Change ΔVREF-T 0 ≤ Tj ≤ 125ºC - 5 - mV
Adjustment Pin Current I
ADJ
- 50 100 μA
Adjustment Pin Current
Change
ΔIADJ - VIN
ΔIADJ - IO
3V ≤ (VIN - VO) ≤ 40V, IO=100mA
10mA ≤ IO ≤ 1.5A (TO-220F)
10mA ≤ I
O
≤ 500mA (TO- 252)
-
-
-
0.2
0.2
0.2
5
5
5 μA
Line Regul ation ΔV
O
- V
IN
3V ≤ (V
IN
- V
O
) ≤ 40V, I
O
=100mA - 0.01 0.04 %/V
Load Regulation ΔVO - IO
10mA ≤ IO ≤ 1.5A (TO-220F)
10mA ≤ IO ≤ 500mA (TO-252)
VO ≤ 5V
V
O
> 5V
-
-
5
0.1
25
0.5
mV
%
Minimum Load Current I
O(MIN)
(V
IN
- V
O
) = 40V - 3.5 10 mA
Peak Output Current IO(PEAK) 5V ≤ (VIN - VO) ≤ 15V
(V
IN
- V
O
) = 40V 1.5
0.15 2.2
0.4 -
- A
RMS Output Noise Voltage V
NO
10Hz ≤ f ≤ 10kHz (RMS) - 0.001 - %/V
O
Ripple Rejection Ratio RR VO
10V, f= 120Hz, ΔVIN =1Vrms
CADJ0
C
ADJ
=10μF
-
66
65
80
-
-
dB
NJM317
-
3
-
Ver.2016-04-20
■ TEST CIRCUIT
1) (Reference Voltage Therma l Change) , (Adjustment Pin Current Change), (Line Regulat ion), (Load Regulation),
(Peak Output Current), (RMS Output Noise Current)
2) Minimum Load Current
IOMIN: Minimum Io for
VO = VREF (Typical 1.25V)
(VIN = 40 + VREF)
3) Ripple Rejection
Ripple Rejection = 20log10
o
IN
e
e[dB]
NJM317
-
4
-
Ver.2016-04-20
■ TYPICAL APPLICATIONS
1) VO = 1.25V to 37V Adjustabl e V oltage Regulator
VO = VREF x
1
2
R
R
1 + R2 x IADJ
2) Selected Output Voltage
The transistors Q3 are switched by
selective signal inputs and the output
voltage VO is controlled by the tr ansistor on
or off.
(Example)
When all tr ansistor is off,
VO ·
=
· VREF x
1
2
R
R
1
When the transistor Q3 is on, and others
are off.
VO ·
=
· VREF x
132
32 R)R(R RR
1
*IADJ ignore.
Selective Signal Inputs
3) Regulater with Protect ion Diodes
D1 protects about CO
D2 protects about CADJ
NJM317
-
5
-
Ver.2016-04-20
4) Constant Current Regulator
R1 ≤ 125Ω
10mA ≤ IO ≤ 1.5A
IO = 1
REF
R
V
NJM317F A
NJM317 DL1
NJM317
-
6
-
Ver.2016-04-20
■ TYPICAL CHARACTERISTICS
Minimum Load Current
Peak Output Current
vs. Input-Output Differential Volt age
Output Volt age vs. I nput Vol tage .
Ripple Rejection vs. Fr equency
Ripple Rejection vs. Output Volt age Ripple Rejection vs. Output Current
NJM317
-
7
-
Ver.2016-04-20
■ TYPICAL CHARACTERISTICS
Adjustment Pin Current vs. Temperature
Reference Voltage vs. Temperature
Load Regulati on vs. T emperature
Line Regulation vs. Temperature
Thermal Shut down
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
