ADP5022ACBZ-1-R7 datasheet(4/28 Pages) AD

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ADP5022

Rev. A | Page 4 of 28

BUCK1 AND BUCK2 SPECIFICATIONS

VDDA = VIN1 = VIN2 = 3.6 V, VIN3 = (VOUT3 + 0.5 V) or 2.4 V, whichever is greater, VIN3 ≤ VIN1, TJ = −40°C to +125°C, unless

otherwise noted.1

Table 2.

Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

OPERATING SUPPLY CURRENT

Buck1 Only

IGND1

ILOAD1 = 0 mA, device not switching, EN1

= VDDA, EN2 = EN3 = GND

μA

Buck2 Only

IGND2

ILOAD2 = 0 mA, device not switching, EN2

= VDDA, EN1 = EN3 = GND

μA

Buck1 and Buck2 Only

IGND1-2

ILOAD1 = ILOAD1 = 0 mA, device not switch-

ing, EN1 = EN2 = VDDA, EN3 = GND

μA

OUTPUT VOLTAGE ACCURACY

VOUT1, VOUT2

PWM mode, VIN1 = VIN2 = 2.4 V to 5.5 V,

ILOAD1 = ILOAD2 = 0 mA − 600 mA

−3

POWER SAVE MODE TO PWM CURRENT

THRESHOLD

IPSM-PWM

105

PWM TO POWER SAVE MODE CURRENT

THRESHOLD

IPWM-PSM

100

SW CHARACTERISTICS, BUCK1 and BUCK2

PFET On Resistance

RPFET

Typical at VIN1 = VIN2 = 3.6 V

165

275

mΩ

Typical at VIN1 = VIN2 = 5.0 V

125

mΩ

NFET On Resistance

RNFET

Typical at VIN1 = VIN2 = 3.6 V

125

220

mΩ

Typical at VIN1 = VIN2 = 5.0 V

100

mΩ

Current Limit

ILIMIT1, ILIMIT2

PFET switch peak current limit

750

950

1050

OSCILLATOR FREQUENCY

FSW

2.5

3.0

3.5

MHz

START-UP TIME2

From Shutdown State

TSTARTUP12-SD

250

μs

1 All limits at temperature extremes are guaranteed via correlation using standard statistical quality control.

2 Start-up time is defined as the time from a rising edge on EN1/EN2 to VOUT1/VOUT2 reaching 90% of their nominal value.

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