LTC1142CG(RevC) 查看數據表（PDF） - Linear Technology

零件编号

产品描述 (功能)

生产厂家

LTC1142CG
(Rev.:RevC)

Dual High Efficiency Synchronous Step-Down Switching Regulators

Linear Technology 

LTC1142/LTC1142L/LTC1142HV

ELECTRICAL CHARACTERISTICS TA = 25°C, V10 = V24 = 10V, VSHUTDOWN = 0V, unless otherwise noted.

SYMBOL

V1 – V28

V15 – V14

PARAMETER

Input DC Supply Current (Note 2)

Normal Mode

Sleep Mode

Shutdown

Current Sense Threshold Voltage

VSHUTDOWN

ISHUTDOWN

I11, I24

Shutdown Pin Threshold

Shutdown Pin Input Current

CT Pin Discharge Current

tOFF

Off-Time (Note 3)

tr, tf

Driver Output Transition Times

CONDITIONS

LTC1142L-ADJ (Note 5)

3.5V < V10, V24 < 12V

3.5V < V10, V24 < 12V

VSD1 = VSD2 = 2.1V, 3.5V < V10, V24 < 12V

LTC1142HV-ADJ, LTC1142L-ADJ

V14 = V28 = VOUT + 100mV, V2 = V16 = VREF + 25mV

V14 = V28 = VOUT – 100mV, V2 = V16 = VREF – 25mV q

LTC1142, LTC1142HV

V28 = VOUT + 100mV (Forced)

V28 = VOUT – 100mV (Forced)

q

LTC1142, LTC1142HV

V14 = VOUT + 100mV (Forced)

V14 = VOUT – 100mV (Forced)

q

0V < VSHUTDOWN < 8V, V10, V24 = 16V

VOUT in Regulation, VSENSE – = VOUT

VOUT = 0V

CT = 390pF, ILOAD = 700mA

CL = 3000pF (Pins 6, 9, 20, 23), V10, V24 = 6V

MIN TYP MAX UNITS

1.6 2.1

mA

160 230

µA

10 20

µA

25

mV

130 150 170

mV

25

mV

130 150 170

mV

25

mV

130 150 170

mV

0.5 0.8 2

V

1.2 5

µA

50 70 90

µA

2

10

µA

4

5

6

µs

100 200

ns

– 40°C ≤ TA ≤ 85°C (Note 4), V10 = V24 = 10V, unless otherwise noted.

V2, V16

I2, I16

VOUT

I10, I24

V1 – V28

V15 – V14

Feedback Voltage

Feedback Current

Regulated Output Voltage

3.3V Output

5V Output

Input DC Supply Current (Note 2)

Normal Mode

Sleep Mode

Shutdown

Input DC Supply Current (Note 2)

Normal Mode

Sleep Mode

Shutdown

Input DC Supply Current (Note 2)

Normal Mode

Sleep Mode

Shutdown

Current Sense Threshold Voltage

VSHUTDOWN Shutdown Pin Threshold

tOFF

Off-Time (Note 3)

LTC1142HV-ADJ Only: V10, V24 = 9V

LTC1142HV-ADJ Only

LTC1142, LTC1142HV

ILOAD = 700mA, V24 = 9V

ILOAD = 700mA, V10 = 9V

LTC1142

4V < V10, V24 < 12V

4V < V24 < 12V, 6V < V10 < 12V

VSHUTDOWN = 2.1V, 4V < V10, V24 < 12V

LTC1142HV-ADJ, LTC1142HV

4V < V10, V24 < 18V

4V < V24 < 18V, 6V < V10 < 18V

VSHUTDOWN = 2.1V, 4V < V10, V24 < 12V

LTC1142L-ADJ (Note 5)

3.5V < V10, V24 < 12V

3.5V < V10, V24 < 12V

VSD1 = VSD2 = 2.1V, 3.5V < V10, V24 < 12V

LTC1142HV-ADJ, LTC1142L-ADJ

V14 = V28 = VOUT + 100mV, V2 = V16 = VREF + 25mV

V14 = V28 = VOUT – 100mV, V2 = V16 = VREF – 25mV

LTC1142, LTC1142HV

V28 = VOUT + 100mV (Forced)

V28 = VOUT – 100mV (Forced)

LTC1142, LTC1142HV

V14 = VOUT + 100mV (Forced)

V14 = VOUT – 100mV (Forced)

CT = 390pF, ILOAD = 700mA

1.21 1.25 1.29

V

0.2 1

µA

3.17 3.33 3.40

V

4.85 5.05 5.20

V

1.6 2.4

mA

160 260

µA

10 22

µA

1.6 2.6

mA

160 280

µA

10 24

µA

1.6 2.4

mA

160 260

µA

10 22

µA

25

mV

130 150 170

mV

25

mV

125 150 175

mV

25

mV

125 150 175

mV

0.55 0.8 2

V

3.8 5

6

µs

3

Share Link: