NJM2384D-TE2 [NJRC]
Analog Circuit,;
| 型号： | NJM2384D-TE2 |
| 厂家： | 
NEW JAPAN RADIO |
| 描述： | Analog Circuit, |
| 文件： | 总7页 (文件大小：133K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NJM2384
DC/DC CONVERTER CONTROL IC
WITH CURRENT SENSE AMPLIFIER
■GENERAL DESCRIPTION
■PACKAGE OUTLINE
The NJM2384
functions.
It is suitable for battery charger, power module application
and on-board regulators.
NJM2384D
NJM2384M
■FEATURES
● PWM switching control
NJM2384V
● Operating Voltage
3.6V to 32V
5kHz to 500 kHz
● Wide Oscillator Range
● Current Sensing Amplifier
● Soft-Start Function
● UVLO (Under Voltage Lockouts)
● Bipolar Technology
● Package Outline
DIP14, DMP14, SSOP10
■PIN CONFIGURATION
1
2
3
4
5
6
7
14
13
12
11
10
9
PIN FUNCTION
1.NC
8.NC
2.IN-1
3.IN-2
4.F.B
9. V+
10.CS
11.CT
12.REF
13.IN+
14.NC
5.GND
6.OUT
7.NC
8
NJM2384D
NJM2384M
PIN FUNCTION
1
2
3
4
5
10
9
1.IN-1
2.IN-2
3.F.B
6. V+
7.CS
8.CT
8
7
6
4.GND
5.OUT
9.REF
10.IN+
NJM2384V
Ver 1.2 - 1 -
NJM2384
■BLOCK DIAGRAM
NC
14
IN+
13
REF
12
CT
11
CS
10
V+
9
NC
8
VREF
OSC
CURRENT
L.O
SENSE AMP
U.V.LO
ER·AMP
0.52V
PWM
1
2
3
4
5
6
7
NC
IN-1
IN-2
F.B
GND
OUT
NC
(Package: DIP14, DMP14)
IN+
10
REF
9
CT
8
CS
7
V+
6
VREF
OSC
CURRENT
L.O
SENSE AMP
U.V.LO
ER·AMP
0.52V
PWM
1
2
3
4
5
IN-1
IN-2
F.B
GND
OUT
(Package: SSOP10)
- 2 -
NJM2384
■ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER
SYMBOL
MAXIMUM RATINGS
UNIT
Input Voltage
V+
IOR
36
V
mA
mA
V
Reference Output Current
Output Sink Current
Differential Input Voltage
Common Mode Input Voltage
Power Dissipation
10
ISINK
VID
VIC
200
2.5
V
-0.3 ∼ 2.5
(DIP 14)
700
300
250
PD
(DMP 14)
(SSOP 10)
mW
Operating Temperature Range
Storage Temperature Range
TOPR
TSTG
°C
°C
-40 ∼ +85
-50 ∼ +150
■ELECTRICAL CHARACTERISTICS (V+=6V,RT=33kΩ,CT=1000pF,Ta=25°C)
REFERENCE VOLTAGE BLOCK
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX. UNIT
Output Voltage
Line Regulation
Load Regulation
VREF
LINE
LOAD
IOR=1mA
2.45
–
–
2.50
6.8
5
2.55
20.7
30
V
mV
mV
V+=3.6 ∼ 32V, IOR=1mA
IOR=0.1 ∼ 5.0mA
OSCILLATOR BLOCK
PARAMETER
Oscillation Frequency
SYMBOL
TEST CONDITION
RT=33kΩ, CT=1000pF
V+=3.6 ∼ 32V
MIN.
85
–
TYP.
105
1
MAX. UNIT
fOSC
fdV
125
–
kHz
%
Oscillate Fluctuations1
(Line Fluctuations)
Oscillate Fluctuations2
(Temp Fluctuations)
fdT
–
5
–
%
Ta=-40°C ∼ 85°C
CURRENT SENSE AMPLIFIER BLOCK
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX. UNIT
Input Offset Voltage1
Input Offset Current1
Input Bias Current1
Open Loop Gain1
VIO1
IIO1
IB1
AV1
GB1
–
–
–
–
–
–
2
5
7
50
100
–
mV
nA
5
nA
90
0.6
0 ∼
REF-0.8
–
dB
MHz
V
Gain Bandwidth Product1
–
Input Common Mode
VICM
VOM-
IOM+
1
–
Voltage Ratio1
V
Maximum Output Voltage1
(F.B Pin)
1
RNF=100kΩ
–
1
V
Maximum Source Current1
(F.B Pin)
1
VOM=0.5V
40
85
200
µA
- 3 -
NJM2384
■ELECTRICAL CHARACTERISTICS (V+=6V,RT=33kΩ,CT=1000pF,Ta=25°C)
ERROR AMPLIFIER BLOCK
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX. UNIT
Reference Voltage2
Input Bias Current2
Open Loop Gain2
VB2
IB2
AV2
GB2
0.51
0.52
5
90
0.6
–
0.53
100
–
V
nA
dB
MHz
V
–
–
–
–
Gain Bandwidth Product2
–
Maximum Output Voltage2
VOM-2
RNF=100kΩ
VOM=0.5V
1
(F.B Pin)
Maximum Source Current2
(F.B Pin)
IOM+
2
40
85
200
µA
PWM COMPARATE BLOCK
PARAMETER
SYMBOL
VTH0
TEST CONDITION
duty·cycle=0% (note)
MIN.
–
TYP.
1.65
MAX. UNIT
Input Threshold Voltage
(F.B Pin)
1.75
V
Input Threshold Voltage
(F.B Pin)
VTH100 duty·cycle=100% (note)
–
2.10
–
V
SOFT START CIRCUIT BLOCK
PARAMETER
SYMBOL
TEST CONDITION
CS Pin=1.8V
MIN.
–
TYP.
250
MAX. UNIT
Input Bias Current
IBCS
650
0.35
–
nA
(CS Pin)
Input Threshold Voltage
(CS Pin)
Input Threshold Voltage
(CS Pin)
VTHCS0 duty·cycle=0% (note)
–
–
0.25
0.7
V
VTHCS50 duty·cycle=100% (note)
V
UNDER VOLTAGE LOCKOUT BLOCK
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX. UNIT
ON Threshold Voltage
OFF Threshold Voltage
Hysteresis Voltage
VTHON
VTHOFF
VHYS
–
–
60
2.70
2.52
180
–
–
–
V
V
mV
OUTPUT BLOCK
PARAMETER
L Output Voltage (OUT Pin)
SYMBOL
VOL
TEST CONDITION
Output Sink Current=100mA
MIN.
–
TYP.
0.25
MAX. UNIT
0.65
V
GENERAL CHARACTERISTICS
PARAMETER SYMBOL
TEST CONDITION
Latch Mode
MIN.
1.2
TYP.
1.5
MAX. UNIT
Latch Mode
VTHLA
1.8
V
Threshold Voltage (CS Pin)
Quiescent Current
ICCLA
ICCAV
–
–
1.6
5.5
2.2
10
mA
mA
Average Quiescent Current
RL=
, duty·cycle=50%
(note) Duty·Cycle is defined as follows:
Duty·Cycle=0%: IC output transistor is OFF.
Duty·Cycle=100%: IC output transistor is ON.
- 4 -
NJM2384
■ TYPICAL APPLICATIONS
330kΩ
4.7uF 180kΩ
Vin
36kΩ
1000pF
2.50V
10
9
8
7
6
Vout
VREF
OSC
CURRENT
L.O
SENSE AMP
U.V.LO
ER·AMP
0.52V
PWM
GND
1
2
3
4
5
(Package:SSOP10)
- 5 -
NJM2384
■TYPICAL CHARACTERISTICS
L Output Voltage vs. Source Current
(V+=6V,RT=33kΩ,CT=1000pF,Ta=25°C)
Duty Cycle vs. CS Pin Voltage
(V+=6V,Ta=25°C)
100
80
60
40
20
0
1
0.8
0.6
0.4
0.2
0
0
50
100
150
200
250
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
CS Pin Voltage VTHCS (V)
Source Current ISOURCE (mA)
Oscillator Frequency vs. Timing Resistor
(V+=6V,Ta=25°C)
Oscillator Frequency vs. Timing Capacitor
(V+=6V,Ta=25°C)
1000
100
10
1000
100
10
CT=470pF
RT=10kΩ
RT=33kΩ
RT=100kΩ
CT=1000pF
1
1
1
10
100
1000
10000
10
100
1000
10000 100000
Timing Resistor RT (kΩ)
Timing Capacitor CT (pF)
Reference Voltage vs. Operating Voltage
(V+=6V,Ta=25°C)
Operating Current vs. Operating Voltage
(Ta=25°C)
2.52
10
8
2.51
2.5
6
ICCAV
4
ICCLA
2.49
2.48
2
0
0
10
20
30
40
0
10
20
30
40
Operating Voltage V+ (V)
Operating Voltage V+ (V)
- 6 -
NJM2384
■TYPICAL CHARACTERISTICS
Oscillator Frequency vs. Temperature
(V+=6V,RT=33kΩ,CT=1000pF)
Reference Voltage vs. Temperature
(V+=6V,IOR=1mA)
160
140
120
100
80
3
2.8
2.6
2.4
2.2
2
60
-50 -25
0
25 50 75 100 125 150
-50 -25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
Ambient Temperature Ta (°C)
L Output Voltage vs. Temperature
Supply Current vs. Temperature
(V+=6V,ISINK=100mA,RT=33kΩ,CT=1000pF)
(V+=6V,RT=33kΩ,CT=1000pF)
0.5
0.4
0.3
0.2
0.1
0
8
6
4
2
0
ICCAV
ICCLA
-50 -25
0
25 50 75 100 125 150
-50 -25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
Ambient Temperature Ta (°C)
[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.
- 7 -
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