SiP2800, SiP2801, SiP2802, SiP2803, SiP2804, SiP2805
Vishay Siliconix
Low Power Consumption Current Mode Controller
DESCRIPTION
The SiP280X family includes six high-speed, low power
consumption, BiCMOS Current Mode Controllers. These
integrated circuits contain all of the control and drive
functions required for off-line and DC/DC current-mode
switching power supplies. Their advanced architecture
enables the implementation of full-featured designs with
minimal external parts count.
The SiP280X family controllers is available in lead (Pb)-free,
SO-8 packages, and are rated for operation over the
industrial temperature range of - 40 °C to 85 °C.
FEATURES
• Pin-for-pin compatible with UCC280X
controllers
• Enhanced performance UC284X
for new designs
• 100 µA typical start-up current
• 500 µA typical operating current
• Internal soft start at power-on and after fault
• 100 ns internal leading edge blanking
•
Compliant to RoHS Directive 2002/95/EC
APPLICATIONS
•
•
•
•
•
Efficiency-enhanced DC/DC converter modules
Low quiescent current standby power supplies
Offline (AC/DC) power supplies
Universal input power supplies
Buck, boost, and buck-boost converters
Part Number
SiP2800
SiP2801
SiP2802
SiP2803
SiP2804
SiP2805
Maximum Duty Cycle
100 %
50 %
100 %
100 %
50 %
50 %
Reference Voltage
5V
5V
5V
4V
5V
4V
Turn-On Threshold
7.2 V
9.4 V
12.5 V
4.1 V
12.5 V
4.1 V
Turn-Off Threshold
6.9 V
7.4 V
8.3 V
3.6 V
8.3 V
3.6 V
TYPICAL APPLICATION CIRCUIT
+ 48 V
+
+
12 V/3 A
+
FB
V
CC
COMP
SiP2801
RC
REF
GND
OUT
CS
GND
Flyback Converter for Point of Load Application
* Pb containing terminations are not RoHS compliant, exemptions may apply.
Document Number: 72660
S11-0598-Rev. E, 25-Apr-11
www.vishay.com
1
This datasheet is subject to change without notice.
THE PRODUCT DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
SiP2800, SiP2801, SiP2802, SiP2803, SiP2804, SiP2805
Vishay Siliconix
ABSOLUTE MAXIMUM RATINGS
a
Parameter
V
CCb
FB, Comp, CS
Power Dissipation SO-8
Power Dissipation TSSOP-8
Storage Temperature
Limit
12
- 0.3 to 6
1
830
- 55 to 150
Unit
V
W
mW
°C
Notes:
a. Currents are positive into, negative out of the specificed terminal.
b. In normal operation V
CC
is powered through a current limiting resistor. An absolute maximum of 12 V applies when V
CC
is driven from a low
impedance source such that I
CC
does not exceed 30 mA.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation
of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING RANGE
Parameter
Operating Temperature Range
Limit
- 40 to 85
Unit
°C
SPECIFICATIONS
Test Conditions Unless Specified
V
CC
= 10 V, R
T
= 100 k., C
T
= 330 pF
C
REF
= 0.1 µF, - 40 °C < T
A
< 85 °C
SiP2800 /
SiP2801 /
SiP2802 /
SiP2804
SiP2803 /
SiP2805
SiP2800 / SiP2801 / SiP2802 / SiP2804
SiP2803 / SiP2805
Load Regulation
Line Regulation
Noise
Short Circuit Current
Oscillator
SiP2800 /
SiP2801 /
SiP2802 /
SiP2804
SiP2803 /
SiP2805
Temperature Stability
Amplitude
Peak Voltage
V
P-P
V
P
2.25
40
46
52
kHz
26
31
2.5
2.40
2.45
2.55
36
%
V
V
LOAD
V
LINE
V
NOISE
I
SC
0.2 mA < I
LOAD
< 5 mA
V
CC
= 10 V to Clamp, T
A
= 25 °C
V
CC
= 10 V to Clamp
10 Hz < f < 10 kHz, T
A
= 25 °C
130
-5
- 35
Limits
Min.
a
Typ.
b
Max.
a
Unit
Parameter
Reference
Symbol
4.925
5.000
5.075
V
I
LOAD
= 0.2 mA, T
A
= 25 °C
Reference Voltage
V
REF
3.940
4.88
3.90
4.000
5.00
4.00
10
4.06
5.10
4.08
30
1.9
2.5
mV
mV/V
µV
mA
Frequency
f
OSC
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2
Document Number: 72660
S11-0598-Rev. E, 25-Apr-11
This datasheet is subject to change without notice.
THE PRODUCT DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
SiP2800, SiP2801, SiP2802, SiP2803, SiP2804, SiP2805
Vishay Siliconix
SPECIFICATIONS
Test Conditions Unless Specified
V
CC
= 10 V, R
T
= 100 k., C
T
= 330 pF
C
REF
= 0.1 µF, - 40 °C < T
A
< 85 °C
SiP2800 /
SiP2801 /
SiP2802 /
SiP2804
SiP2803 /
SiP2805
Limits
Min.
a
Typ.
b
Max.
a
Unit
Parameter
Error Amplifier
Symbol
COMP = 2.5 V
Input Voltage
V
IN
COMP = 2.0 V
Input Bias Current
Open Loop Gain
COMP Sink Current
COMP Source Current
Gain Bandwidth
I
BIAS1
A
V
I
SINK
I
SOURCE
B
W
2.44
2.50
2.56
V
1.95
-1
60
2.00
2.05
1
µA
dB
3.5
- 0.8
mA
MHz
80
- 0.5
2
FB = 2.7 V, COMP = 1.1 V
FB = 1.8 V, COMP = V
REF
- 1.2 V
0.3
- 0.2
SPECIFICATIONS
Test Conditions Unless Specified
V
CC
= 10 V, R
T
= 100 k., C
T
= 330 pF
C
REF
= 0.1 µF, - 40 °C < T
A
< 85 °C
SiP2800 /
SiP2802 /
SiP2803
SiP2801 /
SiP2804 /
SiP2805
COMP = 0 V
0 < V
CS
< 0.8 V
COMP = 5 V
CS = 0 V
1.2
0.9
- 200
0.45
50
1.47
0.90
100
1.65
1.0
Limits
Min.
a
Typ.
b
Max.
a
Unit
Parameter
PWM and Overcurrent Comparator
Symbol
97
99
100
%
Maximum Duty Cycle
D
MAX
48
49
50
0
1.9
1.1
200
1.35
150
1.73
V/V
V
nA
V
ns
Minimum Duty Cycle
Gain
c
Max. Input Signal
Input Bias Current 2
COMP to CS Offset
CS Pin Blanking Time
Overcurrent Comparator Fault
Threshold
Output
D
MIN
A
V
V
IMAX
I
BIAS2
I = 20 mA
I = 200 mA
V
OL
Output Voltage
I = 50 mA, V
CC
= 5 V
I = 20 mA, V
CC
= 0 V
I = - 20 mA
V
CC
- V
OH
I = - 200 mA
I = - 50 mA, V
CC
= 5 V
Rise Time
Fall Time
t
r
t
f
CL = 1 nF
All Parts
SiP2803 /
SiP2805
All Parts
All Parts
SiP2803 /
SiP2805
0.1
0.35
0.15
0.70
0.15
1.00
0.40
41
44
0.40
0.90
0.40
1.20
0.40
1.90
0.90
70
75
ns
V
Document Number: 72660
S11-0598-Rev. E, 25-Apr-11
www.vishay.com
3
This datasheet is subject to change without notice.
THE PRODUCT DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
SiP2800, SiP2801, SiP2802, SiP2803, SiP2804, SiP2805
Vishay Siliconix
SPECIFICATIONS
Test Conditions Unless Specified
V
CC
= 10 V, R
T
= 100 k., C
T
= 330 pF
C
REF
= 0.1 µF, - 40 °C < T
A
< 85 °C
SiP2800
SiP2801
Start Threshold
d
V
START
SiP2802 /
SiP2804
SiP2803 /
SiP2805
SiP2800
SiP2801
Stop Threshold
d
V
STOP
SiP2802 /
SiP2804
SiP2803 /
SiP2805
SiP2800
SiP2801
Start to Stop Hysteresis
V
HYS
SiP2802 /
SiP2804
SiP2803 /
SiP2805
Soft-Start
COMP Rise Time
Overall
Start-up Current
Operating Supply Current
V
CC
Internal Zener Voltage
d
V
CC
Internal Zener Voltage Minus
Start Threshold Voltage
d
I
START
I
CC
V
Z
V
Z
- V
START
V
CC
< Start Threshold
FB = 0 V, CS = 0 V
I
CC
= 10 mA
SiP2802 /
SiP28004
12.0
0.5
0.1
0.5
13.5
1.0
0.2
1.0
15.0
V
mA
SS
FB = 1.8 V, Rise from 0.5 V to V
REF
- 1 V
4
10
ms
Limits
Min.
a
6.6
8.6
11.5
3.7
6.3
6.8
7.6
3.2
0.05
1.5
3.0
0.2
Typ.
b
7.2
9.4
12.5
4.1
6.9
7.4
8.3
3.6
0.30
2.0
4.2
0.5
Max.
a
7.8
10.2
13.5
4.5
7.5
8.0
9.0
4.0
0.48
2.4
5.1
0.8
V
Unit
Parameter
Undervoltage Lockout
Symbol
Notes:
a. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum (- 40 °C to 85 °C).
b. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing and are measured at V
CC
= 12 V unless otherwise
noted.
c. Gain is defined by A = DVCOMP/DVCS, 0 V
VCS
0.8 V.
d. Start, Stop, and Zener voltages track each other.
www.vishay.com
4
Document Number: 72660
S11-0598-Rev. E, 25-Apr-11
This datasheet is subject to change without notice.
THE PRODUCT DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
SiP2800, SiP2801, SiP2802, SiP2803, SiP2804, SiP2805
Vishay Siliconix
TYPICAL CHARACTERISTICS
1000
1000
Oscillator Frequency (kHz)
100
C
t
= 100 pF
C
t
= 200 pF
C
t
= 330 pF
10
10
100
R
t
(kΩ)
C
t
= 1000 pF
1000
Oscillator Frequency (kHz)
100
C
t
= 100 pF
C
t
= 200 pF
C
t
= 330 pF
C
t
= 1000 pF
10
100
R
t
(kΩ)
1000
10
SiP2800 / SiP2801 / SiP2802 / SiP2804
Oscillator Frequency vs. R
t
and C
t
500
450
400
350
Dead Time (nS)
300
250
200
150
100
50
0
100
0.7
- 50
SiP2800/01/02/04
SiP2803/05
R
t
= 100 kΩ
1.2
COMP to CS Offset (V)
1.3
SiP2803 / SiP2805
Oscillator Frequency vs. R
t
and C
t
CS = 0 V
1.1
1.0
0.9
0.8
200
300
400
500
600
700
800
900 1000
- 25
0
25
50
75
100
125
150
C
t
(pf)
Temperature (°C)
Oscillator Dead Time vs. C
t
80
70
60
50
Phase
Gain (dB)
40
30
Gain
20
10
0
- 10
- 20
- 30
1
10
100
Frequency (kHz)
COMP to CS Offset Voltage vs. Temperature
135
90
Phase (° )
45
0
- 45
1000
10000
Error Amplifier Gain and Phase vs. Frequency
Document Number: 72660
S11-0598-Rev. E, 25-Apr-11
www.vishay.com
5
This datasheet is subject to change without notice.
THE PRODUCT DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
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