ADP1864AUJZ-R7 datasheet(3/16 Pages) AD

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ADP1864

Rev. 0 | Page 3 of 16

SPECIFICATIONS

VIN = 5 V, TA = 25°C, unless otherwise noted.

Table 1.

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

POWER SUPPLY

Input Voltage

VIN

3.15

Quiescent Current

VIN = 3.15 V to 14 V, GATE = IN

235

350

μA

Shutdown Supply Current

ISD

VIN = 3.15 V to 14 V, COMP = GND

μA

Undervoltage Lockout Threshold

VUVLO

VIN falling, TA = −40°C to +85°C

2.75

2.90

3.01

VIN rising, TA = −40°C to +85°C

2.85

3.00

3.10

ERROR AMPLIFIER

FB Input Current

IFB

VFB = 0.8 V

−20

-2

FB Input Current

IFB

VFB = 0.8 V, TA = −40°C to +85°C

−35

-2

Amplifier Transconductance

VFB = 0.8 V, ICOMP = ±5 μA

0.24

COMP Startup Threshold

VIN = 3.15 V to 14 V , TA = −40°C to +85°

0.55

0.67

0.80

COMP Shutdown Threshold

VIN = 3.15 V to 14 V , TA = −40°C to +85°

0.15

0.3

0.55

COMP Startup Current Source

COMP = GND

0.25

0.6

0.85

μA

FB Regulation Voltage

VIN = 3.15 V to 14 V , TA = −40°C to +85°

0.790

0.8

0.810

Overvoltage Protection Threshold

VOVP

Measured at FB

0.87

0.885

0.9

Overvoltage Protection Hysteresis

CURRENT SENSE

Peak Current Sense Voltage

TA = −40°C to +85°C

125

Peak Current Sense Voltage

VIN = 3.15 V to 14 V, TA = −40°C to +85°C

125

Current Sense Gain

VCS to VCOMP

V/V

OUTPUT REGULATION

Line Regulation1

VIN = 3.15 V to 14 V, VFB/VIN

0.12

mV/V

Load Regulation2

VFB/VCOMP

−2

mV/V

OSCILLATOR

Oscillator Frequency

VFB = 0.8 V

500

580

650

kHz

VFB = 0 V

190

kHz

FB Frequency Foldback Threshold

0.35

GATE DRIVE

Gate Rise Time

CGATE = 3 nF

Gate Fall Time

CGATE = 3 nF

Minimum On Time

PGATE minimum low duration

190

SOFT START POWER-ON TIME

1.1

1 Line regulation is measured with the application circuit of Figure 1. Line regulation is specified as being the change in the FB voltage resulting from a 1 V change in the

IN voltage.

2 Load regulation is measured using the application circuit from Figure 1. Load regulation is specified as the change in the FB voltage resulting from a 1 V change in

COMP voltage. The COMP voltage range is typically 0.9 V to 2.3 V for the minimum to maximum load current condition.

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