ADP7158ARDZ-2.8-R7 datasheet(5/23 Pages) AD

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ADP7158

Data Sheet

Rev. A | Page 4 of 22

Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

VREG UVLO THRESHOLDS7

Rising

VREGUVLORISE

1.94

Falling

VREGUVLOFALL

1.60

Hysteresis

VREGUVLOHYS

185

EN INPUT PRECISION

2.3 V ≤ VIN ≤ 5.5 V

EN Input

Logic High

VEN_HIGH

1.13

1.22

1.31

Logic Low

VEN_LOW

1.05

1.13

1.22

Logic Hysteresis

VEN_HYS

LEAKAGE CURRENT

REF_SENSE

IREF_SENSE_LKG

IEN_LKG

EN = VIN or GND

0.01

μA

1 Guaranteed by characterization but not production tested.

2 The ADP7158 is available in 16 standard voltages between 1.2 V and 3.3 V, including 1.2 V, 1.3 V, 1.5 V, 1.6 V, 1.8 V, 2.0 V, 2.2 V, 2.5 V, 2.6 V, 2.7 V, 2.8 V, 2.9 V, 3.0 V, 3.1 V,

3.2 V, and 3.3 V.

3 Based on an endpoint calculation using 10 mA and 2 A loads.

4 Current-limit threshold is defined as the current at which the output voltage drops to 90% of the specified typical value. For example, the current limit for a 3.0 V

output voltage is defined as the current that causes the output voltage to drop to 90% of 3.0 V, or 2.7 V.

5 Dropout voltage is defined as the input to output voltage differential when the input voltage is set to the nominal output voltage. Dropout voltage applies only for

output voltages greater than 2.3 V.

6 Start-up time is defined as the time between the rising edge of VEN to VOUT, VREG, or VREF being at 90% of its nominal value.

7 The output voltage is disabled until the VREG UVLO rise threshold is crossed. The VREG output is disabled until the input voltage UVLO rising threshold is crossed.

INPUT AND OUTPUT CAPACITORS, RECOMMENDED SPECIFICATIONS

Table 3.

Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

MINIMUM CAPACITANCE

TA = −40°C to +125°C

Input1

CIN

10.0

μF

Regulator

CREG

1.0

μF

Output1

COUT

10.0

μF

Bypass

CBYP

1.0

μF

Reference

CREF

1.0

μF

CAPACITOR EFFECTIVE SERIES RESISTANCE (ESR)

TA = −40°C to +125°C

COUT, CIN

RESR

0.001

0.1

CREG, CREF

RESR

0.001

0.2

CBYP

RESR

0.001

2.0

1 The minimum input and output capacitance must be greater than 7.0 μF over the full range of operating conditions. The full range of operating conditions in the

application must be considered during device selection to ensure that the minimum capacitance specification is met. X7R and X5R type capacitors are recommended;

Y5V and Z5U capacitors are not recommended for use with any low dropout regulator.

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