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UCC2809N-1

Description
Switching Controller, Current-mode, 0.8A, 110kHz Switching Freq-Max, BCDMOS, PDIP8, DIP-8
CategoryPower/power management    The power supply circuit   
File Size132KB,7 Pages
ManufacturerUnitrode Corporation
Download Datasheet Parametric Compare View All

UCC2809N-1 Overview

Switching Controller, Current-mode, 0.8A, 110kHz Switching Freq-Max, BCDMOS, PDIP8, DIP-8

UCC2809N-1 Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
package instructionDIP, DIP8,.3
Reach Compliance Codeunknown
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage15 V
Minimum input voltage10 V
Nominal input voltage12 V
JESD-30 codeR-PDIP-T8
JESD-609 codee0
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current0.8 A
Nominal output voltage1 V
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP8,.3
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Certification statusNot Qualified
surface mountNO
Switch configurationBUCK
Maximum switching frequency110 kHz
technologyBCDMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
Base Number Matches1
application
INFO
available
UCC1809-1/-2
UCC2809-1/-2
UCC3809-1/-2
Economy Primary Side Controller
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 100µA Startup Current
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 100µA, a user ac-
cessible voltage reference, logic to ensure latched operation, a PWM com-
parator, 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.
PART
TURN ON
TURN OFF
NUMBER THRESHOLD THRESHOLD
UCCX809-1
10V
8V
UCCX809-2
15V
8V
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.
TYPICAL APPLICATION DIAGRAM
R
START
V
IN
FB
1V
1
1V
NOISE
FILTER
FEEDBACK
REF
+5V
SS
5V
REF
8
C
REF
V
OUT
6µA
2
CURRENT
SENSE
SLOPE
COMP
0.5V
C
SS
DISABLE
UVLO
VDD
7
15/8V
10/8V
17.5V
C
VDD
RT1
3
OSC
4
C
T
PWM
LATCH
CLK
R
Q
S
6
OUT
RT2
GND
5
V
REF
UDG-99036
SLUS166A - NOVEMBER 1999

UCC2809N-1 Related Products

UCC2809N-1 UCC1809J-2 UCC2809N-2 UCC1809J-1
Description Switching Controller, Current-mode, 0.8A, 110kHz Switching Freq-Max, BCDMOS, PDIP8, DIP-8 Switching Controller, Current-mode, 0.8A, 110kHz Switching Freq-Max, BCDMOS, CDIP8, DIP-8 Switching Controller, Current-mode, 0.8A, 110kHz Switching Freq-Max, BCDMOS, PDIP8, DIP-8 Switching Controller, Current-mode, 0.8A, 110kHz Switching Freq-Max, BCDMOS, CDIP8, DIP-8
Is it Rohs certified? incompatible incompatible incompatible incompatible
package instruction DIP, DIP8,.3 DIP, DIP8,.3 DIP, DIP8,.3 DIP, DIP8,.3
Reach Compliance Code unknown unknown unknown unknow
Analog Integrated Circuits - Other Types SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage 15 V 15 V 15 V 15 V
Minimum input voltage 10 V 10 V 10 V 10 V
Nominal input voltage 12 V 12 V 12 V 12 V
JESD-30 code R-PDIP-T8 R-CDIP-T8 R-PDIP-T8 R-CDIP-T8
JESD-609 code e0 e0 e0 e0
Number of functions 1 1 1 1
Number of terminals 8 8 8 8
Maximum operating temperature 85 °C 125 °C 85 °C 125 °C
Minimum operating temperature -40 °C -55 °C -40 °C -55 °C
Maximum output current 0.8 A 0.8 A 0.8 A 0.8 A
Package body material PLASTIC/EPOXY CERAMIC, METAL-SEALED COFIRED PLASTIC/EPOXY CERAMIC, METAL-SEALED COFIRED
encapsulated code DIP DIP DIP DIP
Encapsulate equivalent code DIP8,.3 DIP8,.3 DIP8,.3 DIP8,.3
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form IN-LINE IN-LINE IN-LINE IN-LINE
Peak Reflow Temperature (Celsius) NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
Certification status Not Qualified Not Qualified Not Qualified Not Qualified
surface mount NO NO NO NO
Switch configuration BUCK BUCK BUCK BUCK
Maximum switching frequency 110 kHz 110 kHz 110 kHz 110 kHz
technology BCDMOS BCDMOS BCDMOS BCDMOS
Temperature level INDUSTRIAL MILITARY INDUSTRIAL MILITARY
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE
Terminal pitch 2.54 mm 2.54 mm 2.54 mm 2.54 mm
Terminal location DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
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