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New Japan Radio

NJM3524V Datasheet Preview

NJM3524V Datasheet

Switching Regulator Controller

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NJM3524
SWITCHING REGULATOR CONTROL CIRCUIT
GENERAL DESCRIPTION
PACKAGE OUTLINE
The NJM3524 of regulating pulse width modulators contains all of the
control circuitry necessary to implement switching regulators of either
polarity converters and voltage doublers, as well as other power control
applications. This device includes a 5V voltage regulator capable of
supplying up to 50mA to external circuitry a control amplifier, an oscillator,
a pulse width modulator, a phase splitting flip-flop, dual alternating output
NJM3524D
NJM3524M
switch transistors, and current limiting and shut-down circuitry. Both the
regulator output transistor and each output switch are internally current
limited and, to limit junction temperature, an internal thermal shut-down
circuit is employed.
NJM3524V
FEATURES
Operating Voltage (8V to 40V)
Complete PWM Power Control Circuitry
Uncommitted Outputs for Single-Ended or Pash-Pull Appli Cutions
Low Stand by Current
Package Outline
DIP16, DMP16, SSOP16
Bipolar Technology
RECOMMEND OPERATING CONDITION
Parameter
Symbol Min. Typ. Max. Unit
Operating Voltage
V+
8
20
40
V
Output Reference Current
IREF
0
-
50 mA
Timing Resistance
RT
1.8
-
100 k
Timing Capacitor
CT
-
0.1 µF
Operating Temperature Range Topr -20
25
75
°C
PIN CONFIGURATION
EQUIVALENT CIRCUIT
Ver.2003-07-18
-1-




New Japan Radio

NJM3524V Datasheet Preview

NJM3524V Datasheet

Switching Regulator Controller

No Preview Available !

NJM3524
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Supply Voltage
V+
Output Current
IO
Output Reference Current
IREF
Power Dissipation
PD
Operating Temperature Range
Topr
Storage Temperature Range
Tstg
RATINGS
40
100
50
(DIP16) 700
(DMP16) 300
-20 to + 75
-40 to +125
(Ta = 25ºC)
UNIT
V
mA
mA
mW
mW
ºC
ºC
ELECTRICAL CHARACTERISTICS
Electrical characteristics over recommended operating free-air temperature range, V+ = 20V, f = 20kHz
(unless otherwise noted).
Reference Section
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX.
Output Voltage
Line Regulation
Load Regulation
Ripple Rejection
VREF
VREF-V+
VREF-IREF
RR
V+ = 20v
V+ = 8 to 40V
V+ = 10V, IREF = 0 to 20mA
V+ = 20V, f = 120Hz
4.6
5.0
5.4
-
10
30
-
20
50
-
66
-
Temperature Coefficient
T. C. Ta = -20 to +75°C
-
-1
-
Short Circuit Output Current
IREF S
-
100
-
UNIT
V
mV
mV
dB
mV/°C
mA
Error Amplifier Section
Input Offset Voltage
Input Bias Current
Open Loop Voltage Gain
Input Common Mode Voltage Range
Common Mode Rejection Ratio
Unity Gain Bandwidth
Output Voltage Swing
VIO
IB (1)
AV
VCM
CMR
-
-
VIC = 2.5V
VIC = 2.5V
Ta = 25°C
-
2
10
mV
-
2
10
µA
60
80
-
dB
1.8
-
3.4
V
-
70
-
dB
-
3
-
MHz
0.5
-
3.8
V
Oscillator Section
Frequency
Frequency Change with Voltage
Frequency Change with Temperature
Output Pulse Width (Pin 3)
Output Amplitude (Pin 3)
fOSC CT = 0.01µF, RT = 2k
-
V+ = 8 to 40V
-
Ta = -20 to +75°C
-
CT = 0.01µF
-
-
30
-
kHz
-
-
1
%
-
-
3
%
-
0.5
-
µS
-
3.5
-
V
-2-
Ver.2003-07-18


Part Number NJM3524V
Description Switching Regulator Controller
Maker New Japan Radio
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NJM3524V Datasheet PDF






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