Datasheet

Data Sheet ADP5052
Rev. 0 | Page 5 of 40
BUCK REGULATOR SPECIFICATIONS
V
IN
= 12 V, V
VREG
= 5.1 V, f
SW
= 600 kHz for all channels, T
J
= −40°C to +125°C for minimum and maximum specifications, and T
A
= 25°C
for typical specifications, unless otherwise noted.
Table 2.
Parameter Symbol Min Typ Max Unit Test Conditions/Comments
CHANNEL 1 SYNC BUCK REGULATOR
FB1 Pin
Fixed Output Options V
OUT1
0.85 1.60 V Fuse trim
Adjustable Feedback Voltage V
FB1
0.800 V
Feedback Voltage Accuracy
V
FB1(DEFAULT )
−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
FB1
0.1 µA Adjustable voltage
SW1 Pin
High-Side Power FET
On Resistance
R
DSON(1H)
100 mΩ Pin-to-pin measurement
Current-Limit Threshold I
TH(ILIM1)
3.50 4.4 5.28 A R
ILIM1
= floating
1.91 2.63 3.08 A R
ILIM1
= 47 kΩ
4.95 6.44 7.48 A R
ILIM1
= 22 kΩ
Minimum On Time t
MIN_ON1
117 155 ns f
SW
= 250 kHz to 1.4 MHz
Minimum Off Time
t
MIN_OFF1
1/9 × t
SW
ns
f
SW
= 250 kHz to 1.4 MHz
Low-Side Driver, DL1 Pin
Rising Time t
RISING1
20 ns C
ISS
= 1.2 nF
Falling Time t
FALLING1
3.4 ns C
ISS
= 1.2 nF
Sourcing Resistor t
SOURCING1
10 Ω
Sinking Resistor t
SINKING1
0.95 Ω
Error Amplifier (EA), COMP1 Pin
EA Transconductance g
m1
310 470 620 µS
Soft Start
Soft Start Time t
SS1
2.0 ms SS12 connected to VREG
Programmable Soft Start Range 2.0 8.0 ms
Hiccup Time t
HICCUP1
7 × t
SS1
ms
C
OUT
Discharge Switch On Resistance R
DIS1
250 Ω
CHANNEL 2 SYNC BUCK REGULATOR
FB2 Pin
Fixed Output Options V
OUT2
3.3 5.0 V Fuse trim
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