Datasheet

ADP1853 Data Sheet
Rev. 0 | Page 4 of 28
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
LOGIC INPUTS
EN EN rising 0.57 0.63 0.68 V
EN Hysteresis 0.03 V
EN Input Leakage Current I
EN
V
IN
= 2.75 V to 20 V 1 200 nA
SYNC Logic Input Low
1.3
V
SYNC Logic Input High 1.9 V
SYNC Input Pull-Down Resistance R
SYNC
1 MΩ
GATE DRIVERS
DH Rise Time C
DH
= 3 nF, V
BST
− V
SW
= 5 V 16 ns
DH Fall Time C
DH
= 3 nF, V
BST
− V
SW
= 5 V 14 ns
DL Rise Time C
DL
= 3 nF 16 ns
DL Fall Time C
DL
= 3 nF 14 ns
DH to DL Dead Time External 3 nF is connected to DH and DL 25 ns
DH or DL Driver R
ON
, Sourcing
Current
1
R
ON_SOURCE
Sourcing 2 A with a 100 ns pulse
2
Ω
Sourcing 1 A with a 100 ns pulse, V
IN
= 3 V 2.3 Ω
DH or DL Driver R
ON
, Tempco TC
RON
V
IN
= 3 V or 12 V 0.3 %/
o
C
DH or DL Driver R
ON
, Sinking
Current
1
R
ON_SINK
Sinking 2 A with a 100 ns pulse 1.5 Ω
Sinking 1 A with a 100 ns pulse, V
IN
= 3 V 2 Ω
DH Maximum Duty Cycle
1
f
OSC
= 300 kHz 90 %
DH Maximum Duty Cycle
1
f
OSC
= 1500 kHz 50 %
Minimum DH On Time f
OSC
= 200 kHz to 1500 kHz 85 ns
Minimum DH Off Time f
OSC
= 200 kHz to 1500 kHz 345 ns
Minimum DL On Time f
OSC
= 200 kHz to 1500 kHz 295 ns
COMP VOLTAGE RANGE
COMP Pulse Skip Threshold V
COMP,THRES
In pulse skip mode (PSM) 0.9 V
COMP Clamp High Voltage V
COMP,HIGH
2.2 V
THERMAL SHUTDOWN
Thermal Shutdown Threshold T
TMSD
155
°C
Thermal Shutdown Hysteresis 20
°C
OVERVOLTAGE AND POWER GOOD
THRESHOLDS
FB Overvoltage Threshold V
OV
V
FB
rising 0.630 0.65 0.670 V
FB Overvoltage Hysteresis 18 mV
FB Undervoltage Threshold V
UV
V
FB
falling 0.525 0.55 0.575 V
FB Undervoltage Hysteresis 15 mV
TRK INPUT VOLTAGE RANGE
1
0 5 V
FB TO TRK OFFSET VOLTAGE TRK = 0.1 V to 0.57 V; offset = V
FB
− V
TRK
−10 0 +10 mV
SOFT START
SS Output Current I
SS
During startup 4.6 6.5 8.4 µA
SS Pull-Down Resistor During a fault condition 3 kΩ
FB to SS offset V
SS
= 0.1 V to 0.6 V; offset = V
FB
− V
SS
−10 +10 mV