|
Switching Regulator
TECHNICAL DATA: PART NUMBER:
SCP-4182,
REV. A
10 AMP HIGH EFFICIENCY
SWITCHING REGULATOR
FEATURES:
ISOLATED HERMETIC PACKAGE
SIMILAR to INDUSTRY TYPE LT1270A
MAXIMUM RATINGS All ratings are at TA = 25°C unless otherwise specified.
| Parameter |
Conditions |
|
Max. |
Units |
| Supply Voltage |
- |
|
30 |
Vdc |
| Switch Output Voltage |
- |
|
60 |
Vdc |
| Storage Temperature Range |
- |
|
-65 to +150
|
°C |
| Operating Temperature Range(TJ) |
- |
|
-55 to +150
|
°C |
| Lead Temperature |
Soldering, 10 seconds |
|
+300 |
°C |
| ELECTRICAL CHARACTERISTICS VIN = 15V, VC = 0.5V, VFB = VREF,
switch pin open, unless otherwise noted. |
| Parameter |
Conditions |
Min. |
Typ. |
Max. |
Units |
| Reference Voltage
(VREF) |
Measured at Feedback Pin VC = 0.8V |
1.224
1.214 |
1.244
1.244 |
1.264
1.274 |
V
V |
| Feedback Input Current
(IB) |
VFB = VREF |
-
- |
350
- |
750
1100 |
nA
nA |
| Error Amplifier Transconductance
(gm) |
D IC =
± 25m A |
3000
2400 |
4400
- |
6000
7000 |
m mho
m mho
|
| Error Amplifier Source or Sink
Current |
VC = 1.5V |
150
120 |
200
- |
350
400 |
m A
m A
|
| Error Amplifier Clamp Voltage |
Hi Clamp, VFB = 1V
Lo Clamp, VFB = 1.5V |
1.8
0.25 |
-
0.38 |
2.3
0.52 |
V
V |
| Reference Voltage Line Regulation |
3V £ VIN
£ VMAX, VC = 0.8V |
- |
- |
0.03 |
%/V |
| Error Amplifier Voltage Gain (AV) |
0.9V £ VC
£ 1.4 |
500 |
800 |
- |
V/V |
| Minimum Input Voltage |
- |
- |
2.8 |
3.0 |
V |
| Supply Current (IQ) |
3V £ VIN
£ VMAX, VC = 0.6V |
- |
7.0 |
10 |
mA |
| Control Pin Threshold |
Duty Cycle = 0 |
0.8
0.6 |
0.9
- |
1.08
1.25 |
V
V |
| Normal/Flyback Threshold on Feedback Pin |
- |
0.4 |
0.45 |
0.54 |
V |
| Flyback Reference Voltage
(VFB) |
IFB = 50m A |
15
14 |
16.3
- |
17.6
18 |
V
V |
| Change in Flyback Reference
Voltage (VFB) |
0.05 £ IFB
£ 1mA |
4.5 |
6.8 |
8.5 |
V |
| Flyback Reference Voltage Line
Regulation |
IFB = 50m A 3V £ VIN
£ VMAX |
- |
0.01 |
0.03 |
%/V |
| Flyback Amplifier
Transconductance (gm) |
D IC =
± 10m A |
150 |
300 |
650 |
m mho |
| Flyback Amplifier Source and Sink
Current |
VC = 0.6V Source
· IFB = 50m A Sink · |
15
25 |
32
40 |
70
70 |
m A
m A
|
| Output Switch Breakdown Voltage
(BV) |
3V £ VIN £ VMAX
· ISW = 5mA |
60 |
75 |
- |
V |
| Thermal Resistance
(Rq JC) |
- |
- |
- |
2.7 |
°C
/W |
SENSITRON SEN-4182
TECHNICAL DATA
PART NUMBER: SEN-4182, REV. A
| ELECTRICAL CHARACTERISTICS VIN
= 15V, VC = 0.5V, VFB = VREF, switch pin open, unless
otherwise noted. |
| Parameter |
Conditions |
Min.
|
Typ.
|
Max.
|
Units
|
| Output Switch ON Resistance
(VSAT) |
TJ
£ 100° C TJ
£ 125° C |
-
- |
0.12
- |
0.18
0.22 |
W
W
|
| Control Voltage to Switch Current Transconductance |
- |
- |
12 |
- |
A/V |
| Switch Current Limit
(ILIM) |
Duty Cycle = 50% TJ
£ 100° C Duty
Cycle = 80% TJ £ 100° C |
10
7.5 |
-
- |
16
14 |
A
A |
| Supply Current Increase During
Switch ON Time D IIN
D ISW |
- |
- |
25 |
40 |
mA/A |
| Switching Frequency (f) |
- |
50
50 |
60
- |
70
70 |
kHz
kHz |
| Maximum Switch Duty Cycle DC (max) |
- |
80 |
92 |
95 |
% |
| Flyback Sense Delay Time |
- |
- |
1.5 |
- |
m s |
| Shutdown Mode Supply Current |
3V £ VIN £ VMAX, VC = 0.05V |
- |
100 |
400 |
m A |
| Shutdown Mode Threshold Voltage |
3V £ VIN £ VMAX |
100
50 |
150
- |
250
300 |
mV
mV |
Notes:
- Measured with VC in hi clamp, VFB =
0.8V.
- For duty cycles (DC) between 50% and 80%, minimum guaranteed
switch current is given by ILM = 8.33 (1.7 — DC).
- Minimum current limit is reduced by 0.5A @ 125°C. 100°C
test limits are guaranteed by correlation to 125°C tests.
MECHANICAL DIMENSIONS - In inches / mm
PINOUT TABLE
| TYPE |
PINS 2-6 |
PINS 24-28 |
PIN 22 |
PIN 8 |
PINS 16-21 |
PINS 9-14 |
| Switching Regulator in a LCC-28T Package |
VIN
|
Gnd. |
VC
|
FB
|
Gnd. |
VSW
|
Note: All other pins — No
Connection.
|
