Datasheet > LTC1981

LTC1981

更新时间： 2023-12-20 18:46:09

品牌	Logo	应用领域
亚德诺 - ADI		开关控制器
页数	文件大小	规格书
8页	152K
描述
采用 SOT-23 封装的单通道和双通道微功率高端开关控制器

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数据手册

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LTC1981 数据手册

LTC1981/LTC1982

W W U W

ABSOLUTE AXI U RATI GS

(Notes 1, 2)

Terminal Voltage

Operating Temperature Range

LTC1981: V_CC, GATE, SHDN, GDR ........ –0.3V to 7.5V

LTC1982: V_CC, GATE 1, GATE 2,

LTC1981E/LTC1982E (Note 3) ............ –40°C to 85°C

Storage Temperature Range ................. –65°C to 150°C

Lead Temperature (Soldering, 10 sec).................. 300°C

SHDN 1, SHDN 2 ................... –0.3V to 7.5V

PACKAGE/ORDER I FOR ATIO

ORDER PART

NUMBER

ORDER PART

NUMBER

TOP VIEW

GDR 1

GND 2

5 V

SHDN 1 1

GND 2

6 V

LTC1981ES5

LTC1982ES6

5 GATE 1

4 GATE 2

4 GATE

SHDN 3

SHDN 2 3

S5 PART

MARKING

S6 PART

MARKING

S5 PACKAGE

S6 PACKAGE

5-LEAD PLASTIC SOT-23

6-LEAD PLASTIC SOT-23

T_JMAX= 150°C, θ_JA= 250°C/W

T_JMAX= 150°C, θ_JA= 230°C/W

LTSF

LTPF

Consult factory for parts specified with wider operating temperature ranges.

ELECTRICAL CHARACTERISTICS

The ● denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at T_A= 25°C. V_CC= 5V unless otherwise specified. C_{GATE 1}= C_{GATE 2}= C_GATE= 1000pF.

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Supply Voltage

Supply Current

●

1.8

5.5

GATE 1 and GATE 2 Outputs High

GATE 1 or GATE 2 Outputs High

GATE Output High (LTC1981)

●

µA

SHDN Supply Current

SHDN 1 and SHDN 2 Inputs Low

SHDN Input Low (LTC1981)

●

µA

SHDN

GATE Drive Output Voltage

= 1.8V

= 2.7V

= 3.3V

= 5V

●

4.27

6.40

6.90

4.50

6.75

7.25

4.75

7.10

7.50

GATE

Charge Pump Oscillator Frequency Measured with 10k Resistor from Output to GND

600

kHz

OSC

Turn-on Time into 1000pF

From SHDN 1, SHDN 2 Going High to

GATE 1, GATE 2 = V + 1V

110

µs

From SHDN Going High to GATE = V +1V (LTC1981)

Turn-off Time into 1000pF

From SHDN 1, SHDN 2 Going Low to

OFF

GATE 1, GATE 2 GATE = 100mV

µs

SHDN Input Low Voltage

SHDN Input High Voltage

SHDN Input Capacitance

SHDN Input Leakage Current

= 1.8V to 5.5V

●

0.4

1.6

(Note 4)

µA

±1

123 4 5 6 7 8

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