UCC3808PW-5, UCC3809, UCC3809-1 Selling Leads, Datasheet
MFG:BB/TI Package Cooled:TSSOP8 D/C:07/08+
UCC3808PW-5, UCC3809, UCC3809-1 Datasheet download
Part Number: UCC3808PW-5
MFG: BB/TI
Package Cooled: TSSOP8
D/C: 07/08+
UCC3808PW-5, UCC3809, UCC3809-1
- Table of contents:
Info of UCC3808PW-5
Info of UCC3809
Info of UCC3809-1
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About UCC1570
PDF/DataSheet Download
Datasheet: UCC1570
File Size: 348806 KB
Manufacturer: TI [Texas Instruments]
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About UCC3809
PDF/DataSheet Download
Datasheet: UCC3809
File Size: 134714 KB
Manufacturer: TI [Texas Instruments]
Download : Click here to Download
About UCC3809-1
PDF/DataSheet Download
Datasheet: UCC3809-1
File Size: 134714 KB
Manufacturer: TI [Texas Instruments]
Download : Click here to Download
UCC3809-1 General Description
The UCC3809 family of BCDMOS economy low power integrated circuits contains all the control and drive circuitry required for off-line and isolated DC-to-DC fixed frequency current mode switching power supplies with minimal external parts count. Internally implemented circuits include undervoltage lockout featuring startup current less than 100A, a user accessible voltage reference, logic to ensure latched operation, a PWM comparator, and a totem pole output stage to sink or source peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off state.
Oscillator frequency and maximum duty cycle are programmed with two resistors and a capacitor. The UCC3809 family also features full cycle soft start.
The family has UVLO thresholds and hysteresis levels for off-line and DC-to-DC systems as shown in the table to the left.
The UCC3809 and the UCC2809 are offered in the 8 pin SOIC (D), PDIP (N), TSSOP (PW), and MSOP (P) packages. The small TSSOP and MSOP packages make the device ideal for applications where board space and height are at a premium.
UCC3809-1 Maximum Ratings
VDD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19V
IVDD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA
IOUT (tpw < 1s and Duty Cycle < 10%). . . . . . . 0.4A to 0.8A
RT1, RT2, SS . . . . . . . . . . . . . . . .. . . . . . .. 0.3V to REF + 0.3V
IREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 15mA
Storage Temperature . . . . . . . . . . . . . . . . . . . 65 to +150
Junction Temperature. . . . . . . . . . . . . . . . . . . 55 to +150
Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . . +300
* Values beyond which damage may occur.
All voltages are with respect to ground unless otherwise stated. Currents are positive into, negative out of the specified terminal. Consult Packaging Section of Databook for thermal limitations and considerations of packages.
IVDD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA
IOUT (tpw < 1s and Duty Cycle < 10%). . . . . . . 0.4A to 0.8A
RT1, RT2, SS . . . . . . . . . . . . . . . .. . . . . . .. 0.3V to REF + 0.3V
IREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 15mA
Storage Temperature . . . . . . . . . . . . . . . . . . . 65 to +150
Junction Temperature. . . . . . . . . . . . . . . . . . . 55 to +150
Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . . +300
* Values beyond which damage may occur.
All voltages are with respect to ground unless otherwise stated. Currents are positive into, negative out of the specified terminal. Consult Packaging Section of Databook for thermal limitations and considerations of packages.
UCC3809-1 Features
• User Programmable Soft Start With Active Low Shutdown
• User Programmable Maximum Duty Cycle
• Accessible 5V Reference
• Undervoltage Lockout
• Operation to 1MHz
• 0.4A Source/0.8A Sink FET Driver
• Low 100A Startup Current
• User Programmable Maximum Duty Cycle
• Accessible 5V Reference
• Undervoltage Lockout
• Operation to 1MHz
• 0.4A Source/0.8A Sink FET Driver
• Low 100A Startup Current
UCC3809-1 Connection Diagram
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