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CS5102, CS51021, CS51021A

Table of contents:
Info of CS5102
Info of CS51021
Info of CS51021A

CS5102, CS51021, CS51021A Selling Leads, Datasheet

MFG:SOP16 Package Cooled:3560 D/C:08+

CS5102, CS51021, CS51021A Datasheet download

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Part Number: CS5102

MFG: SOP16

Package Cooled: 3560

D/C: 08+

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CS51021 General Description

The CS51021/22/23/24 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 start-up current (75A) and high frequency operation capability, the CS51021/ 22/23/24 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 5V reference. The CS51021 and CS51023 feature bidirectional synchronization capability, while the CS51022 and CS51024 offer a sleep mode with 100A maximum IC current consumption. The CS51021/22/23/24 family is available in a 16 lead narrow body SO package.

CS51021 Maximum Ratings

Power Supply Voltage, V_CC ............................................................................................-0.3V, 20V
Driver Supply Voltage, V_C ..............................................................................................-0.3V, 20V
SYNC, SLEEP, R_TC_T, SOFT START, V_FB, SLOPE, I_SENSE, UV, OV, I_SET (Logic Pins)......-0.25V to VREF
Peak GATE Output Current.........................................................................................................1A
Steady State Output Current..............................................................................................± 0.2A
Operating Junction Temperature, T_J...................................................................................150°C
Storage Temperature Range, T_S..............................................................................-65 to 150°C
ESD (Human Body Model).........................................................................................................2kV
Lead Temperature Soldering: Reflow (SMD styles only)..60 sec. max above 183°C, 230°C peak

CS51021 Features

`75A Max. Startup Current
`Fixed Frequency Current Mode Control
`1MHz 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
`1A Sink/Source Gate Drive
`Bidirectional Synchronization (CS51021/23)
`50ns PWM Propagation Delay
`100A Max Sleep Current (CS51022/24)

CS51021 Connection Diagram

CS51021A General Description

The CS51021A/2A/3A/4A Fixed Frequency PWM Current Mode Controller family provides all necessary features required for ACDC or DCDC 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 SO package.

CS51021A 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_TC_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, TJ	150	°C
Storage Temperature Range, TS	65 to +150	°C
ESD (Human Body Model)	2.0	KV
Lead Temperature Soldering:Reflow:(SMD styles only)(Note1)	230 peak	°C

1. 60 second maximum above 183°C.
*The maximum package power dissipation must be observed.

CS51021A 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)

CS51021A Connection Diagram

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