ADP1071-1ACCZ-R7 datasheet(5/27 Pages) AD

5 / 27 page

Data Sheet

ADP1071-1/ADP1071-2

Rev. B | Page 5 of 27

Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

CURRENT-LIMIT SENSE

(PRIMARY)

CS Limit Threshold

VCS_LIM

Overcurrent sense limit threshold

120

CS Leading Edge

Blanking Time

150

Current Source di/dt for

Slope Compensation

Switching period (tS) = 1/fS

µA per tS

Overcurrent Protection

(OCP) Comparator

Delay

Time in OCP Before

Entering Hiccup

Mode

1.5

OCP Hiccup Time

See the Input/Output Current-Limit

Protection section

FB PIN AND ERROR

AMPLIFIER

Feedback Accuracy

Voltage

VFB

TJ = −40°C to +85°C

−0.85%

+1.2

+0.85%

TJ = −40°C to +125°C

−1.25%

+1.2

+1.25%

Temperature

Coefficient

ppm/°C

FB Input Bias Current

−100

+100

Transconductance

230

250

270

µS

Output Current Clamp

Minimum

−57

µA

Maximum

µA

COMP Clamp Voltage

Maximum

2.52

Minimum

0.7

Open-Loop Gain

Output Shunt Resistance

GΩ

Gain Bandwidth Product

MHz

PRECISION ENABLE

THRESHOLD

EN Threshold

VEN

EN rising

1.14

1.2

1.26

EN Hysteresis

VEN < 1.2 V

µA

VEN > 1.2 V

µA

EN Hysteresis Current

µA

LIGHT LOAD MODE

(ADP1071-1 ONLY)

LLM Current Source

Resistor from MODE to AGND1

5.5

6.5

7.5

µA

TEMPERATURE

Thermal Shutdown

155

°C

Hysteresis

−15

°C

SOFT START

Open Loop Soft Start

Time on Primary

tSS1

GATE resistor = 10 kΩ

16 × 775

GATE resistor = 22 kΩ

64 × 775

GATE resistor = 47 kΩ

256 × 775

GATE resistor = 100 kΩ

4 × 775

SS2 Current Source

During startup

µA

SS2 Discharging

Current

During a fault condition or soft stop

µA

ADP1071-1ACCZ-R7 数据表(PDF) 5 Page - Analog Devices

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