Datasheet

ADP5022
Rev. C | 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, T
J
= −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 I
GND1
I
LOAD1
= 0 mA, device not switching, EN1
= VDDA, EN2 = EN3 = GND
24 A
Buck2 Only I
GND2
I
LOAD2
= 0 mA, device not switching, EN2
= VDDA, EN1 = EN3 = GND
32 A
Buck1 and Buck2 Only I
GND1-2
I
LOAD1
= I
LOAD1
= 0 mA, device not switch-
ing, EN1 = EN2 = VDDA, EN3 = GND
48 64 A
OUTPUT VOLTAGE ACCURACY V
OUT1
, V
OUT2
PWM mode, VIN1 = VIN2 = 2.4 V to 5.5 V,
I
LOAD1
= I
LOAD2
= 0 mA − 600 mA
−3 +3 %
POWER SAVE MODE TO PWM CURRENT
THRESHOLD
I
PSM-PWM
105 mA
PWM TO POWER SAVE MODE CURRENT
THRESHOLD
I
PWM-PSM
100 mA
SW CHARACTERISTICS, BUCK1 and BUCK2
PFET On Resistance R
PFET
Typical at VIN1 = VIN2 = 3.6 V 165 275 mΩ
Typical at VIN1 = VIN2 = 5.0 V 125 mΩ
NFET On Resistance R
NFET
Typical at VIN1 = VIN2 = 3.6 V 125 220 mΩ
Typical at VIN1 = VIN2 = 5.0 V 100 mΩ
Current Limit I
LIMIT1
, I
LIMIT2
PFET switch peak current limit 750 950 1050 mA
OSCILLATOR FREQUENCY F
SW
2.5 3.0 3.5 MHz
START-UP TIME
2
From Shutdown State T
STARTUP12-SD
250 s
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.