Datasheet

Data Sheet ADP5050
Rev. 0 | Page 7 of 60
Parameter Symbol Min Typ Max Unit Test Conditions/Comments
CHANNEL 2 SYNC BUCK REGULATOR
FB2 Pin
Fixed Output Options V
OUT2
3.3 5.0 V Fuse trim or I
2
C interface
(3-bit value)
Adjustable Feedback Voltage V
FB2
0.800 V
Feedback Voltage Accuracy V
FB2(DE FAULT )
−0.55 +0.55 % T
J
= 25°C
−1.25 +1.0 % 0°C ≤ T
J
≤ 85°C
−1.5 +1.5 % −40°C ≤ T
J
≤ +125°C
Feedback Bias Current I
FB2
0.1 µA Adjustable voltage
SW2 Pin
High-Side Power FET
On Resistance
R
DSON(2H)
110
mΩ
Pin-to-pin measurement
Current-Limit Threshold I
TH(ILIM2)
3.50 4.4 5.28 A R
ILIM2
= floating
1.91 2.63 3.08 A R
ILIM2
= 47 kΩ
4.95 6.44 7.48 A R
ILIM2
= 22 kΩ
Minimum On Time t
MIN_ON2
117 155 ns f
SW
= 250 kHz to 1.4 MHz
Minimum Off Time t
MIN_OFF2
1/9 × t
SW
ns f
SW
= 250 kHz to 1.4 MHz
Low-Side Driver, DL2 Pin
Rising Time t
RISING2
20 ns C
ISS
= 1.2 nF
Falling Time t
FALLING2
3.4 ns C
ISS
= 1.2 nF
Sourcing Resistor t
SOURCING2
10 Ω
Sinking Resistor
t
SINKING2
0.95
Ω
Error Amplifier (EA), COMP2 Pin
EA Transconductance g
m2
310 470 620 µS
Soft Start
Soft Start Time t
SS2
2.0 ms SS12 connected to VREG
Programmable Soft Start Range 2.0 8.0 ms
Hiccup Time t
HICCUP2
7 × t
SS2
ms
C
OUT
Discharge Switch On Resistance R
DIS2
250 Ω
CHANNEL 3 SYNC BUCK REGULATOR
FB3 Pin
Fixed Output Options V
OUT3
1.20 1.80 V Fuse trim or I
2
C interface
(3-bit value)
Adjustable Feedback Voltage V
FB3
0.800 V
Feedback Voltage Accuracy
V
FB3(DE FAULT )
−0.55
+0.55
%
T
J
= 25°C
−1.25
+1.0
%
0°C ≤ T
J
≤ 85°C
−1.5 +1.5 % −40°C ≤ T
J
≤ +125°C
Feedback Bias Current I
FB3
0.1 µA Adjustable voltage
SW3 Pin
High-Side Power FET
On Resistance
R
DSON(3H)
225 mΩ Pin-to-pin measurement
Low-Side Power FET
On Resistance
R
DSON(3L)
150 mΩ Pin-to-pin measurement
Current-Limit Threshold I
TH(ILIM3)
1.7 2.2 2.55 A
Minimum On Time t
MIN_ON3
90 120 ns f
SW
= 250 kHz to 1.4 MHz
Minimum Off Time t
MIN_OFF3
1/9 × t
SW
ns f
SW
= 250 kHz to 1.4 MHz
Error Amplifier (EA), COMP3 Pin
EA Transconductance g
m3
310 470 620 µS
Soft Start
Soft Start Time t
SS3
2.0 ms SS34 connected to VREG
Programmable Soft Start Range 2.0 8.0 ms
Hiccup Time t
HICCUP3
7 × t
SS3
ms
C
OUT
Discharge Switch On Resistance
R
DIS3
250
Ω