OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

CS51022ADBG

P1-P3P4-P6P7-P9P10-P11
© Semiconductor Components Industries, LLC, 2006
February, 2006 − Rev. 8
1 Publication Order Number:
CS51021A/D
CS51021A, CS51022A,
CS51023A, CS51024A
Enhanced Current Mode
PWM Controller
The CS51021A/2A/3A/4A Fixed Frequency PWM Current Mode
Controller family provides all necessary features required for AC−DC
or DC−DC primary side control. Several features are included
eliminating the additional components needed to implement them
externally. In addition to low startup current (75 mA) and high
frequency operation capability, the CS51021A/2A/3A/4A family
includes overvoltage and undervoltage monitoring, externally
programmable dual threshold overcurrent protection, current sense
leading edge blanking, current slope compensation, accurate duty cycle
control and an externally available 5.0 V reference. The CS51021A
and CS51023A feature bidirectional synchronization capability, while
the CS51022A and CS51024A offer a sleep mode with 100 mA
maximum IC current consumption. The CS51021A/2A/3A/4A family
is available in a 16 lead narrow body SOIC package.
Device Sleep/Synch V
CC
Start/Stop
CS51021A Synch 8.25 V/7.7 V
CS51022A Sleep 8.25 V/7.7 V
CS51023A Synch 13 V/7.7 V
CS51024A Sleep 13 V/7.7 V
Features
• 75 mA Max. Startup Current
• Fixed Frequency Current Mode Control
• 1.0 MHz Switching Frequency
• Undervoltage Protection Monitor
• Overvoltage Protection Monitor with Programmable Hysteresis
• Programmable Dual Threshold Overcurrent Protection with
Delayed Restart
• Programmable Soft Start
• Accurate Maximum Duty Cycle Limit
• Programmable Slope Compensation
• Leading Edge Current Sense Blanking
• 1.0 A Sink/Source Gate Drive
• Bidirectional Synchronization (CS51021A/3A)
• 50 ns PWM Propagation Delay
• 100 mA Max Sleep Current (CS51022A/4A)
• Pb−Free Packages are Available*
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
x = Specific Device Code
A = Assembly Location
WL, L = Wafer Lot
Y = Year
WW, W = Work Week
G or G = Pb−Free Package
SOIC−16
D SUFFIX
CASE 751B
1
16
V
FB
I
SET
1
CS5102xAG
AWLYWW
16
COMPR
T
C
T
SSOV
LGNDUV
V
REF
SLOPE
V
CC
SLEEP or SYNC
PGNDI
SENSE
V
C
GATE
PIN CONNECTIONS AND
MARKING DIAGRAMS
http://onsemi.com
1
16
TSSOP−16
DTB SUFFIX
CASE 948F
CS51
022A
ALYW G
G
116
See detailed ordering and shipping information in the packag
e
dimensions section on page 9 of this data sheet.
ORDERING INFORMATION
CS51021A, CS51022A, CS51023A, CS51024A
http://onsemi.com
2
V
C
V
REF
COMP
V
FB
R
T
C
T
SYNC/
C
SS
V
CC
UV
OV
I
SET
SLOPE
GATE
I
SENSE
PGND
CS51021A/2A
LGND
SLEEP
22 k
4700 pF
51 k
10 k
0.01 mF
24.3 k,
1.0%
200 k,
1.0%
2.49 k,
1.0%
BA521
IRF6345
6.98 k,
1.0%
6.98 k,
1.0%
470 pF
100 p
100
10 k
62
680 pF
100 mF 100 mF
V
OUT
SGND
(5 V/5 A)
10
FZT688
SYNC/SLEEP
22 mF
18 V
BAS21
51 k
11 V
(36 V to 72 V)
PGND
0.01 mF
1.0 mF
100
100:1
4:1
2:5
10
V
IN
MOC81025
TL431
1000 pF
5.1 k0.1 mF
2.0 k, 1.0%
2.0 k,
1.0%
1.0 k
180
1.0 K
10 K
330 pF
Figure 1. Typical Application Diagram, 36−72 V to 5.0 V, 5.0 A DC−DC Converter
MAXIMUM RATINGS*
Rating Value Unit
Power Supply Voltage, V
CC
−0.3, 20 V
Driver Supply Voltage, V
C
−0.3, 20 V
SYNC, SLEEP, R
T
C
T
, SOFT−START, V
FB
, SLOPE, I
SENSE
, UV, OV, I
SET
(Logic Pins) 0.25 to V
REF
V
Peak GATE Output Current 1.0 A
Steady State Output Current ±0.2 A
Operating Junction Temperature, T
J
150 °C
Storage Temperature Range, T
S
−65 to +150 °C
ESD (Human Body Model) 2.0 kV
Lead Temperature Soldering: Reflow: (SMD styles only) (Note 1) 230 peak °C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
*The maximum package power dissipation must be observed.
1. 60 second maximum above 183°C.
CS51021A, CS51022A, CS51023A, CS51024A
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS (Unless otherwise stated, specifications apply for −40°C < T
A
< 85°C, −40°C < T
J
< 150°C,
3.0 V < V
C
< 20 V, 8.2 V < V
CC
< 20 V, R
T
= 12 kW, C
T
= 390 pF)
Characteristic
Test Conditions Min Typ Max Unit
Under Voltage Lockout
START Threshold (CS51021A/2A) − 7.95 8.25 8.8 V
START Threshold (CS51023A/4A) − 12.4 13 13.4 V
STOP Threshold − 7.4 7.7 8.2 V
Hysteresis (CS51021A/2A) − 0.50 0.75 1.00 V
Hysteresis (CS51023A/4A) − 4.0 5.0 6.0 V
I
CC
@ Startup (CS51021A/2A) V
CC
< UV
START
Threshold − 40 75
mA
I
CC
@ Startup (CS51023A/4A) V
CC
< UV
START
Threshold − 45 75
mA
I
CC
Operating (CS51021A/3A) − − 7.0 9.0 mA
I
CC
Operating (CS51022A/4A) − − 6.0 8.0 mA
I
CC
Operating Includes 1.0 nF Load − 7.0 12 mA
Voltage Reference
Initial Accuracy T
A
= 25°C, I
REF
= 2.0 mA, V
CC
= 14 V, (Note 2) 4.95 5.0 5.05 V
Total Accuracy 1.0 mA < I
REF
< 10 mA 4.9 5.0 5.15 V
Line Regulation 8.2 V < V
CC
< 18 V, I
REF
= 2.0 mA − 6.0 20 mV
Load Regulation 1.0 mA < I
REF
< 10 mA − 6.0 15 mV
NOISE Voltage (Note 2) − 50 −
mV
OP Life Shift T = 1000 Hours, (Note 2) − 4.0 20 mV
FAULT Voltage Force V
REF
0.90 × V
REF
0.93 × V
REF
0.95 × V
REF
V
OK Voltage Force V
REF
0.94 × V
REF
0.96 × V
REF
0.985 × V
REF
V
OK Hysteresis Force V
REF
75 165 250 mV
Current Limit Force V
REF
−20 − − mA
Error Amplifier
Initial Accuracy T
A
= 25°C, I
REF
= 2.0 mA, V
CC
= 14 V,
V
FB
= COMP, (Note 2)
2.465 2.515 2.565 V
Reference Voltage V
FB
= COMP 2.440 2.515 2.590 V
V
FB
Leakage Current V
FB
= 0 V − −0.2 −2.0
mA
Open Loop Gain 1.4 V < COMP < 4.0 V, (Note 2) 60 90 − dB
Unity Gain Bandwidth (Note 2) 1.5 2.5 − MHz
COMP Sink Current COMP = 1.5 V, V
FB
= 2.7 V 2.0 6.0 − mA
COMP Source Current COMP = 1.5 V, V
FB
= 2.3 V −0.2 −0.5 − mA
COMP High Voltage V
FB
= 2.3 V 4.35 4.8 5.0 V
COMP Low Voltage V
FB
= 2.7 V 0.4 0.8 1.2 V
PS Ripple Rejection FREQ = 120 Hz, (Note 2) 60 85 − dB
SS Clamp, V
COMP
V
SS
= 2.5 V, V
FB
= 0 V, I
SET
= 2.0 V 2.4 2.5 2.6 V
I
LIM(SET)
Clamp (Note 2) 0.95 1.0 1.15 V
2. Guaranteed by design, not 100% tested in production.
P1-P3P4-P6P7-P9P10-P11

CS51022ADBG

Mfr. #:
Buy CS51022ADBG
Manufacturer:
ON Semiconductor
Description:
Switching Controllers ANA ENHANCED PWM CTRL
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet