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NJM2374AM

P1-P3P4-P6P7-P8
NJM2374A
-
4
-
Ver.2007-06-08
■ELECTRICAL CHARACTERISTICS
DC Characteristics (V
+
=5V, Ta=25°C)
PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT
Operating Current 1 I
CC1
C
T
=1nF, S
I
=V
+
, IN
+
> V
th
, E
S
=GND – 2.8 4.0 mA
Operating Current 2
(NJM2374AE Only)
I
CC2
V
+
=48V, C
T
=1nF, S
I
=V
+
,
IN
+
> V
th
, E
S
=GND
– 3.4 4.5 mA
Charge Current I
chg
12 20 30 µA
Discharge Current I
dis
110 180 300 µA
Voltage Swing V
OSC
– 0.5 – V
P-P
Discharge to Charge
Current Ratio
I
ratio
S
I
=V
+
– 9 – –
Peak Current
Sense Voltage
V
ipk
I
chg
=I
dis
250 300 350 mV
Saturation Voltage 1 V
sat1
Darlington Connection
(C
S
=C
D
), I
SW
=0.7A
– 1.0 1.3 V
Saturation Voltage 2 V
sat2
I
SW
=0.7A, Ic(driver)=50mA
(Forced β≈14)
– 0.5 0.7 V
Output Transistor
Bias Resistance
R
bias
– 160 – Ω
DC Voltage Gain h
FE
I
SW
=0.7A, V
CE
=5.0V 35 120 – –
Collector Off-State
Current
I
C(Off)
V
CE
=40V
(NJM2374AE: V
CE
=48V)
– 10 – nA
Threshold Voltage V
th
1.225 1.250 1.275 V
Input Bias Current I
IB
IN
+
=0V – 40 400 nA
(note) Output switch tests are performed under pulsed conditions to minimize power dissipation.
■TIMING CHART
Oscillator
Waveform
Reference
Voltage
Output
Voltage
Collector-Emitter
Voltage
High Voltage
Detect
Current-Limit
Active Point
OFF
ON
OSC Block to
FF Reset
HIGH
LOW
NJM2374
A
-
5
-
Ver.2007-06-08
■TIPICAL CHARACTERISTICS
Operating Current vs. Operating Voltage
(C
T
=1nF,S
I
=V
+
,IN
+
>V
th
,E
S
=GND,Ta=25°C)
0
1
2
3
4
0 5 10 15 20 25 30 35 40
Operating Voltage V
+
(V)
Operating Current I
CC
(mA)
Oscillator Frequency vs. Timing Capacitor
(V
+
=5V,S
I
=V
+
,Pin5=GND,Ta=25°C)
1
10
100
1000
100 1000 10000
Timing Capacitor C
T
(pF)
Oscillator Frequency
f
OSC
(kHz)
Saturation Voltage 1 vs. Collector Current
(V
+
=5V,C
S
=C
D
,Ta=25°C)
0
0.5
1
1.5
2
0 0.5 1 1.5 2
Collector Current I
C
(A)
Saturation Voltage 1 V
sat1
(V)
Switch ON/OFF Time vs. Timing Capacitor
(V
+
=5V,S
I
=V
+
,Pin5=GND,Ta=25°C)
1
10
100
1000
100 1000 10000
Timing Capacitor C
T
(pF)
Switch ON/OFF Time
t
ON
/ t
OFF
(µS)
t
ON
t
OFF
Saturation Voltage 2 vs. Collector Current
(V
+
=5V,Ic(driver)=50mA,β
=
14,Ta=25°C)
0
0.5
1
1.5
2
00.511.52
Collector Current I
C
(A)
Saturation Voltage 2 V
sat2
(V)
NJM2374A
-
6
-
Ver.2007-06-08
■TIPICAL CHARACTERISTICS
Saturation Voltage 2 vs. Temperature
(V
+
=5V,I
SW
=0.7A,Ic(driver)=50mA,β=14)
0
0.2
0.4
0.6
0.8
-50 -25 0 25 50 75 100 125 150
Ambient Temperature Ta (°C)
Saturation Voltage 2 V
sat2
(V)
Discharge to Charge Current Ratio vs.
Temperature (V
+
=5V,S
I
=V
+
)
6
7
8
9
10
-50 -25 0 25 50 75 100 125 150
Ambient Temperature Ta (°C)
Discharge to Charge Current
Ratio I
ratio
Saturation Voltage 1 vs. Temperature
(V
+
=5V,C
S
=C
D
,I
SW
=0.7A)
0.6
0.7
0.8
0.9
1
1.1
1.2
-50 -25 0 25 50 75 100 125 150
Ambient Temperature Ta (°C)
Saturation Voltage 1 V
sat1
(V)
Operating Current vs. Temperature
(V
+
=5V,C
T
=1nF,S
I
=V
+
,IN
+
>Vth,E
S
=GND)
0
1
2
3
4
5
-50 -25 0 25 50 75 100 125 150
Ambient Temperature Ta (°C)
Operating Current I
CC
(mA)
Threshold Voltage vs. Temperature
(V
+
=5V)
1.22
1.24
1.26
1.28
1.3
-50 -25 0 25 50 75 100 125 150
Ambient Temperature Ta (°C)
Threshold Voltage V
th
(V)
P1-P3P4-P6P7-P8

NJM2374AM

Mfr. #:
Buy NJM2374AM
Manufacturer:
NJR (New Japan Radio)
Description:
Switching Voltage Regulators PWM DC/DC
Lifecycle:
New from this manufacturer.
Delivery:
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