TSM006

Block Diagram

2/13

1

Block Diagram

PIN DESCRIPTION

Pgnd

Vin

Out

Comp

Ss

Rt/Ct

Vref

Cs

Vin

Vref_Status

Standby

REX

Rb

Frequency mod.

0.5V

Rex

BS

Vref

Fm

DIS

UVLO

Cref

Icomp

600µA

Thermal

Shutdown

Ct

R

S

Q

!Q

Cs_Latch

R

S

Q

!Q

Start up_Latch

Css

Comp_Hiccup

28V

Current source

Disable_Latch

Hiccup_Latch

Burst_Latch

LEB

Comp Clamp = Vss

Slop_Compensation

Soft start

Comp_Osc

Iiss

10µA

Idss1

1µA

Idss2

1mA

Vref

R

2R

Comp_Cs

1V

Cfm

BL

Cslope

14

4

6

3

8

2

1

5

12

7

11

10

9

13

Rt

Vref

Idct1

300µA

Name

SO14

Type

Function

RT/CT

1

Timing capacitor

Sets the oscillator frequency and maximum duty cycle

FM

2

Analog input

Frequency modulation

CS

3

Analog input

Current sense.

BL

4

Analog output

Burst level

SS

5

Timing capacitor

Soft start and hiccup timing, latched disable input.

COMP

6

Analog input

Current comparator for current mode control.

BS

7

Output input

Burst mode status

CSLOPE

8

Analog output

Slope compensation

PGND

9

Power supply

Power ground

OUT

10

Analog output

Totem pole output to direct drive a power MOSFET.

VIN

11

Power supply

Supply input voltage.

VREF

12

Analog output

+5V Voltage reference

REX

13

Analog input

External resistor for internal constant current

DIS

14

Analog input

Latched disable