CS51221EDTB16G ON Semiconductor, CS51221EDTB16G Datasheet

no-image

CS51221EDTB16G

Manufacturer Part Number
CS51221EDTB16G
Description
IC CTRLR PWM FFVOLT MODE 16TSSOP
Manufacturer
ON Semiconductor
Datasheet

Specifications of CS51221EDTB16G

Pwm Type
Voltage Mode
Number Of Outputs
1
Frequency - Max
1MHz
Duty Cycle
90%
Voltage - Supply
4.7 V ~ 15 V
Buck
Yes
Boost
No
Flyback
No
Inverting
No
Doubler
No
Divider
Yes
Cuk
No
Isolated
Yes
Operating Temperature
-40°C ~ 85°C
Package / Case
16-TSSOP
Frequency-max
1MHz
Topology
Buck, Flyback, Forward
Output Voltage
- 0.3 V to + 15 V
Output Current
1000 mA
Switching Frequency
1000 KHz
Duty Cycle (max)
90 %
Fall Time
25 ns
Mounting Style
SMD/SMT
Rise Time
60 ns
Synchronous Pin
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CS51221EDTB16G
Manufacturer:
ON Semiconductor
Quantity:
27
Part Number:
CS51221EDTB16G
Manufacturer:
ON/安森美
Quantity:
20 000
CS51221
Enhanced Voltage Mode
PWM Controller
controller contains all of the features necessary for basic voltage mode
operation. This PWM controller has been optimized for high
frequency primary side control operation. In addition, this device
includes such features as: Soft−Start, accurate duty cycle limit control,
less than 50mA startup current, over and undervoltage protection, and
bidirectional synchronization. The CS51221 is available in a 16 lead
SOIC narrow surface mount package.
Features
*For additional information on our Pb−Free strategy and soldering details, please
© Semiconductor Components Industries, LLC, 2005
September, 2005 − Rev. 8
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
The CS51221 fixed frequency feed forward voltage mode PWM
1.0 MHz Frequency Capability
Fixed Frequency Voltage Mode Operation, with Feed Forward
Thermal Shutdown
Undervoltage Lock−Out
Accurate Programmable Max Duty Cycle Limit
1.0 A Sink/Source Gate Drive
Programmable Pulse−By−Pulse Overcurrent Protection
Leading Edge Current Sense Blanking
75 ns Shutdown Propagation Delay
Programmable Soft−Start
Undervoltage Protection
Overvoltage Protection with Programmable Hysteresis
Bidirectional Synchronization
25 ns GATE Rise and Fall Time (1.0 nF Load)
3.3 V 3% Reference Voltage Output
Pb−Free Packages are Available*
1
CS51221ED16
CS51221EDR16
CS51221EDR16G
CS51221EDTB16G
CS51221EDTB16R2G TSSOP−16
CS51221ED16G
†For information on tape and reel specifications,
16
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
16
Device
1
ORDERING INFORMATION
CS51221= Specific Device Code
A
WL, L
YY, Y
WW, W = Work Week
G
PIN CONNECTIONS AND
I
SYNC
SENSE
GATE
R
MARKING DIAGRAM
1
I
T
SET
OV
http://onsemi.com
UV
FF
C
T
= Assembly Location
= Wafer Lot
= Year
= Pb−Free Package
1
1
TSSOP−16
(Pb−Free)
(Pb−Free)
(Pb−Free)
(Pb−Free)
SOIC−16 48 Units / Rail
SOIC−16
SOIC−16 2500 Tape & Reel
SOIC−16
Package
Publication Order Number:
CASE 751B
DTB SUFFIX
D SUFFIX
CASE 948F
SOIC−16
TSSOP−16
16
16
V
PGND
V
V
LGND
SS
COMP
V
2500 Tape & Reel
2500 Tape & Reel
C
CC
REF
FB
48 Units / Rail
96 Units / Rail
Shipping
CS51221/D

Related parts for CS51221EDTB16G

CS51221EDTB16G Summary of contents

Page 1

... SOIC−16 (Pb−Free) CS51221EDR16 SOIC−16 2500 Tape & Reel CS51221EDR16G SOIC−16 (Pb−Free) CS51221EDTB16G TSSOP−16 (Pb−Free) CS51221EDTB16R2G TSSOP−16 (Pb−Free) †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D ...

Page 2

CS51221 CS51221 Figure 1. Application Diagram, 36 V− 5.0 V/5.0 A Converter http://onsemi.com 2 ...

Page 3

MAXIMUM RATINGS Operating Junction Temperature Lead Temperature Soldering: Storage Temperature Range ESD (Human Body Model) Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit ...

Page 4

ELECTRICAL CHARACTERISTICS (−40°C < 390 pF; unless otherwise specified Characteristic Reference Voltage Total Accuracy Line Regulation Load Regulation Noise Voltage Op Life Shift Fault Voltage V Voltage REF(OK) V Hysteresis REF(OK) ...

Page 5

ELECTRICAL CHARACTERISTICS (−40°C < 390 pF; unless otherwise specified Characteristic Gate Driver High Saturation Voltage Low Saturation Voltage High Voltage Clamp Output Current Output UVL Leakage Rise Time Fall Time Max ...

Page 6

PACKAGE PIN DESCRIPTION Package Pin Pin # Symbol 1 GATE External power switch driver with 1.0 A peak capability. Rail to rail output occurs when the capacitive load is between 470 pF and 10 nF Current sense comparator ...

Page 7

UVL − ENABLE + − UV Lockout Start/Stop SYNC 2 1.0 V Trip Points V 3 (1.263 V) − EAMP − COMP Soft−Start Clamp FF ...

Page 8

THEORY OF OPERATION Feed Forward Voltage Mode Control In conventional voltage mode control, the ramp signal has fixed rising and falling slope. The feedback signal is derived solely from the output voltage. Consequently, voltage mode control has inferior line regulation ...

Page 9

Soft−Start can be programmed through a capacitance connected to the SS pin. The constant charging current to the SS pin (typ). The V (ok) comparator monitors the 3 REF output and latches a ...

Page 10

Figure 8. The SYNC Pin Generates a Sync Pulse at the Beginning of Each Switching Cycle. CH2: GATE Pin, CH3 CH4: SYNC Pin T T Figure 9. Operation with External Sync. CH2: SYNC Pin, CH3: GATE Pin, ...

Page 11

500 400 300 200 100 0.0001 0.001 C (mF) T Figure 10. Typical Performance Characteristics, Oscillator Frequency vs. C that during ...

Page 12

G K −T− SEATING PLANE 0.25 (0.010 PACKAGE THERMAL DATA Parameter R qJC R qJA CS51221 PACKAGE DIMENSIONS SOIC−16 D SUFFIX CASE 751B−05 ISSUE J −B− ...

Page 13

K 16X REF 0.10 (0.004) 0.15 (0.006 L PIN 1 IDENT. 1 0.15 (0.006 −V− C 0.10 (0.004) −T− SEATING PLANE D CS51221 PACKAGE DIMENSIONS TSSOP−16 CASE 948F−01 ISSUE A ...

Page 14

... Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com CS51221 N. American Technical Support: 800−282−9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 14 ON Semiconductor Website: http://onsemi ...

Related keywords