L6902D013TR 查看數據表（PDF） - STMicroelectronics

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L6902D013TR

Up to 1 A switching regulator with adjustable current limit

STMicroelectronics 

Electrical characteristics

5

Electrical characteristics

L6902

Tj = 25°C, VCC = 12V, unless otherwise specified.

Table 5. Electrical characteristics

Symbol

Parameter

Test condition

VCC Operating input voltage range VO = 1.235V; IO = 1A

Vd Dropout voltage

VCC = 8V; IO = 1A

IO Operating charging current Rsense = 0.1Ω

Il Maximum limiting current

VCC = 8V to 36V

fs Switching frequency

d Duty cycle

Dynamic characteristics

V5 Voltage feedback (FB)

η Efficiency

DC characteristics

Iqop

Total operating quiescent

current

Iq Quiescent current

Voltage error amplifier

VOH High level output voltage

VOL Low level output voltage

Io source Source output current

Io sink Sink output current

Ib Source bias current

DC open loop gain

gm Transconductance

Current error amplifier

Voffs Input offset voltage

ICS+ CS+ output current

ICS- CS- output current

8V < VCC < 36V, 20mA < IO < 1A

VO = 5V, VCC = 12V

Duty cycle = 0; VFB = 1.5V

VFB = 1V

VFB = 1.5

Vcomp = 1.9V; VFB = 1V

Vcomp = 1.9V; VFB = 1.5V

RL = 0

Icomp = -0.1 to 0.1mA, Vcomp = 1.9V

VCS- = 1.8V; VCS+ = Vcomp

IO = 1A, Rsense = 100mΩ,

Vout < VCC -2V

IO = 1A, Rsense = 100mΩ

Vout < VCC -2V

Min. Typ. Max. Unit

8

36 V

0.25 0.5 V

0.95 1 1.05 A

(1) 0.92

1.08 A

2 2.5 3.2 A

(1) 212 250 287 kHz

225 250 275 kHz

0

100 %

1.21 1.235 1.259 V

(1) 1.198 1.235 1.272 V

90

%

(1)

3

5 mA

3 mA

3.6

V

0.4 V

200 300

µA

1 1.5

mA

2.5 4 μA

50 58

dB

2.3

mS

95 100 105 mV

1.5 3 µA

1.5 3 µA

6/11

Doc ID 7332 Rev 9

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