LTC3569IUD View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTC3569IUD

Triple Buck Regulator with 1.2A and Two 600mA Outputs and Individual Programmable References

Linear Technology 

LTC3569

Operation

60ns < WIDTH < 55µs

tEN = 125µs (TYP)

tEN tOFF 170µs (TYP) tEN

EN

VREF

COUNTER

(15:0)

DAC

(15:0)

VREF

SHUTDOWN

COUNTER INCREMENTS ON COUNTER RESETS TO FULL-SCALE IF EN COUNTER RESETS TO FULL-SCALE IF EN

FALLING EDGES OF EN

STAYS HIGH FOR MORE THAN 125µs

STAYS LOW FOR MORE THAN 170µs

15 14

15

13

14

13 12 11 10 9

DAC LOADS COUNTER VALUE IF

15 EN STAYS HIGH FOR MORE THAN 125µs

13

0mV

BUCK OFF

COUNT13 = 750mV

SOFT-START

BUCK ON

15 14

15

15

9

COUNT9

= 650mV

COUNT15 = 800mV

SOFT-START

0mV

BUCK OFF BUCK ON

3569 TD

Figure 3. VREF and ENx Timing Diagram

For more information www.linear.com/LTC3569

3569fe

13

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