L6926(2004) 查看數據表（PDF） - STMicroelectronics

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L6926
(Rev.:2004)

HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR

STMicroelectronics 

L6926

Table 2. Absolute Maximum Ratings

Symbol

Parameter

V6

Input voltage

V5

Output switching voltage

V1

Shutdown

V3

Feedback voltage

V2

Error amplifier output voltage

V8

PGOOD

V7

Synchronization mode selector

Ptot Power dissipation at Tamb=70°C

Tj

Junction operating temperature range

Tstg Storage temperature range

LX Pin Maximum Withstanding Voltage Range Test Condition: CDF-

Other pins AEC-Q100-002- “Human Body Model” Acceptance Criteria:

“Normal Performance’

Figure 3. Pin Connection

Value

-0.3 to 6

-1 to VCC

-0.3 to VCC

-0.3 to VCC

-0.3 to VCC

-0.3 to VCC

-0.3 to VCC

0.45

-40 to 150

-65 to 150

±1000

±2000

Unit

V

V

V

V

V

V

V

W

°C

°C

V

V

RUN

COMP

VFB

GND

1

8

2

7

3

6

4

5

D01IN1239AMOD

PGOOD

SYNC

VCC

LX

Table 3. Thermal Data

Symbol

Parameter

Rth j-amb Thermal Resistance Junction to Ambient

Value

180

Unit

°C/W

Table 4. Pin Functions

N

Name

Description

1

RUN Shutdown input. When connected to a low level (lower than 0.4V) the device stops working.

When high (higher than 1.3V) the device is enabled.

2

COMP Error amplifier output. A compensation network has to be connected to this pin. Usually a

220pF capacitor is enough to guarantee the loop stability.

3

VFB Error amplifier inverting input. The output voltage can be adjusted from 0.6V up to the input

voltage by connecting this pin to an external resistor divider.

4

GND Ground.

5

LX

Switch output node. This pin is internally connected to the drain of the internal switches.

6

VCC Input voltage. The start up input voltage is 2.2V (typ) while the operating input voltage range is

from 2V to 5.5V. An internal UVLO circuit realizes a 100mV (typ.) hysteresis.

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