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Электронный компонент: RM4391D

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PRODUCT SPECIFICATION
RC4391
2
Pin Assignments
LBR
LBD
C
X
GND
V
FB
V
REF
+V
S
L
X
8
65-3471-02
7
6
5
1
2
3
4
Absolute Maximum Ratings
Note:
1. The maximum allowable supply voltage (+V
S
) in inverting applications will be reduced by the value of the negative output
voltage, unless an external power transistor is used in place of Q1.
Thermal Characteristics
Parameter
Conditions
Min
Typ
Max
Unit
Internal Power Dissipation
500
mW
Supply Voltage
1
(Pin 6 to Pin 4 or Pin 6 to Pin 5)
+30
V
Operating Temperature
RC4391
0
70
C
RV4391
-25
85
C
RM4391
-55
125
C
Storage Temperature
-65
150
C
Junction Temperature
PDIP, SOIC
125
C
CerDIP
175
C
Switch Current (I
MAX
)
Peak
375
mA
P
D
T
A
<50C
PDIP
468
mW
CerDIP
833
mW
SOIC
300
mW
Lead Soldering Temperature
(10 seconds)
300
C
8-Lead Plastic DIP
8-Lead Ceramic DIP
Small Outline SO-8
Therm. Res
q
JC
--
45
C/W
--
Therm. Res.
q
JA
160
C/W
150
C/W
240
C/W
For T
A
>50C Derate at
6.25 mW/
C
8.33 mW/
C
4.17 mW/
C
Pin Descriptions
Pin
Number
Pin Function Description
1
Low Battery Resistor (LBR)
2
Low Battery Detector (LBD)
3
Timing Capacitor (C
X
)
4
Ground
5
External Inductor (L
X
)
6
+Supply Voltage (+V
S
)
7
+1.25V Reference Voltage (V
REF
)
8
Feedback Voltage (V
FB
)
RC4391
PRODUCT SPECIFICATION
3
Electrical Characteristics
(V
S
= +6.0V, over the full operating temperature range unless otherwise noted)
Note:
1. The maximum allowable supply voltage (+V
S
) in inverting applications will be reduced by the value of the negative output
voltage, unless an external power transistor is used.
Symbol
Parameters
Condition
Min
Typ
Max
Units
+V
S
Supply Voltage
(Note 1)
4.0
30
V
I
SY
Supply Current
V
S
= +25V
300
500
m
A
V
REF
Reference Voltage
1.13
1.25
1.36
V
V
OUT
Output Voltage
V
OUT nom
= -5.0V
-5.5
-5.0
-4.5
V
V
OUT nom
= -15V
-16.5
-15.0
-13.5
LI
1
Line Regulation
V
OUT nom
= -5.0V,
%V
OUT
C
X
= 150pF
V
S
= +5.8V to +15V
2.0
4.0
V
OUT nom
= -15V,
C
X
= 150pF
V
S
= +5.8V to +15
1.5
3.0
L0
1
Load Regulation
V
OUT nom
= -5.0V,
%V
OUT
C
X
= 350pF, V
S
= +4.5V,
P
LOAD
= 0mW to 75mW
0.2
0.5
V
OUT nom
= -15V,
C
X
= 350pF, V
S
= +4.5V,
P
LOAD
= 0mW to 75mW
0.2
0.3
I
CO
Switch Leakage Current
Pin 5 = -20V
0.1
30
m
A
PRODUCT SPECIFICATION
RC4391
4
Electrical Characteristics
(V
S
= +6.0V, T
A
= +25
C unless otherwise noted)
Symbol
Parameters
Condition
Min
Typ
Max
Units
I
SY
Supply Voltage
V
S
= +4.0V,
170
250
m
A
No External Loads
V
S
= +25V
300
500
No External Loads
V
OUT
Output Voltage
V
OUT nom
= -5.0V
-5.35
-5.0
-4.65
V
V
OUT nom
= -15V
-15.85
-15.0
-14.15
LI
1
Line Regulation
V
OUT nom
= -5.0V
%V
OUT
C
X
= 150pF,
1.5
3.0
V
S
= +5.8V to +15V
V
OUT nom
= -15V,
C
X
= 150pF
1.0
2.0
V
S
= +5.8V to +15V
L0
1
Load Regulation
V
OUT nom
= -5.0V,
%V
OUT
C
X
= 350pF, V
S
= +4.5V,
0.2
0.4
P
LOAD
= 0mW to 75mW
V
OUT nom
= -15V,
C
X
= 350pF, V
S
= +4.5V,
0.07
0.14
P
LOAD
= 0mW to 75mW
V
REF
Reference Voltage
1.18
1.25
1.32
V
I
SW
Switch Current
Pin 5 = 5.5V
75
100
mA
I
CO
Switch Leakage Current
Pin 5 = -24V
0.01
5.0
m
A
I
CX
Cap. Charging Current
Pin 3 = 0V
6.0
10
14
m
A
I
LBDL
LBD Leakage Current
Pin 1 = 1.5V, Pin 2 = 6.0V
0.01
5.0
m
A
I
LBD0
LBD On Current
Pin 1 = 1.1V, Pin 2 = 0.4V
210
600
m
A
I
LBRB
LBR Bias Current
Pin 1 = 1.5V
0.7
m
A
RC4391
PRODUCT SPECIFICATION
5
Typical Performance Characteristics
Figure 1. Oscillator Frequency vs. Supply Voltage
Figure 2. Oscillator Frequency vs. Temperature
Figure 3. Reference Voltage vs. Temperature
Figure 4. Reference Voltage vs. Supply Voltage
Figure 5. Collector Current vs. Q1 Saturation Voltage
Figure 6. Minimum Supply Voltage vs. Temperature
F
O
(kHz)
+V
S
(V)
65-3268
0
5
10
15
20
25
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
F (kHz)
T
A
(
C)
65-3272
-55
0
25
70
125
8
7
6
5
4
3
2
1
0
O
V
REF
(V)
T
A
(
C)
65-3269
-55
0
25
70
125
1.260
1.255
1.250
1.245
1.240
V
REF
(V)
+V
S
(V)
65-3273
4
6
10
20
30
1.260
1.255
1.250
1.245
1.240
I
C
(mA)
V
CE
(SAT) (V)
65-3270
600
500
400
300
200
100
0
1
2
3
5
7
8
20
10
4
6
T
A
(
C)
65-3271
-55
0
25
70
125
4
3
2
1
0
+V
S
(V)