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

Typical Performance Characteristics TA = 25°C, unless otherwise noted.

Load Step Cross Talk, Pulse-Skipping,

VIN = 3.6V, CH1 = VOUT1, CH2 = VOUT2,

CH3 = VOUT3, CH4 = ILOAD1

Load Step Cross Talk, Pulse-Skipping,

VIN = 3.6V, CH1 = VOUT1, CH2 = VOUT2,

CH3 = VOUT3, CH4 = ILOAD2

CH1

310mVP-P

CH2

16.8mVP-P

CH3

12mVP-P

100mV/DIV

20mV/DIV

20mV/DIV

CH1

9.6mVP-P

CH2

246mVP-P

CH3

8mVP-P

20mV/DIV

100mV/DIV

20mV/DIV

CH4

1.2A

20µs/DIV

500mA/DIV

3569 G19

CH4

600mA

20µs/DIV

500mA/DIV

3569 G20

Load Step Cross Talk, Pulse-Skipping,

VIN = 3.6V, CH1 = VOUT1, CH2 = VOUT2,

CH3 = VOUT3, CH4 = ILOAD3

CH1

11.6mVP-P

CH2

11.2mVP-P

CH3

266mVP-P

20mV/DIV

20mV/DIV

100mV/DIV

CH4

600mA

20µs/DIV

500mA/DIV

3569 G21

Soft-Start Into Heavy Load, PS, VIN =

3.6V, CH1 = VOUT1, CH2 = VOUT2, CH3

= VOUT3, CH4 = IIN, R2 = PGOOD

CH1 500mV/DIV

CH3 500mV/DIV

CH2 500mV/DIV

R2

2V/DIV

CH4

500mA/DIV

400µs/DIV

3569 G23

ISW Leakage vs VSUPPLY Buck 1

10000

1000

VIN = 3.6V

VFB = 0.9V

BUCK2, BUCK3 OFF

100

85°C

10

1

0.1

25°C

0.01

–50°C

0.001

0

1

2

VSW (V)

3 3.6

3569 G22

Soft-Start Into Light Load, PS, VIN =

3.6V, CH1 = VOUT1, CH2 = VOUT2, CH3

= VOUT3, CH4 = IIN, R3 = PGOOD

CH1 500mV/DIV

CH3 500mV/DIV

CH2 500mV/DIV

R3

2V/DIV

400µs/DIV

CH4

50mA/DIV

3569 G24

For more information www.linear.com/LTC3569

3569fe

7

Share Link: