Datasheet

LTC2952
3
2952fb
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V1 = V2 = VS = 2.7V to 28V unless otherwise noted. (Notes 2, 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
MAX
Operating Supply Voltage V1, V2 or VS
l
2.7 28 V
I
IN_OFF
Quiescent Supply Current Both Ideal
Diodes Switched Off
(M1 = Open, M2 = 0V)
V1 = 2.7V to 28V, V2 = 0V, VS = Open or
V2 = 2.7V to 28V, V1 = 0V, VS = Open.
Measured Current at V1 or V2.
l
24 60 μA
V1 = 2.7V to 28V, V2 = 3.5V, VS = Open.
Measured Current at V1.
l
515 μA
V1 = 2.7V to 28V, V2 = 3.5V, VS = Open.
Measured Current at V2.
l
23 50 μA
I
IN_ON
Quiescent Supply Current Both Ideal
Diodes Switched On
(M1 = 0V, M2 = 0V)
V1 = VS = 2.7V to 28V, V2 = 0V or
V2 = VS = 2.7V to 28V, V1 = 0V. Measured
Combined Current at V1 and VS or V2 and VS.
l
65 170 μA
V2
PREF_TH
V2 Preferential Threshold Voltage
(M1 = Open, M2 = 0V) (Note 4)
V1 = 28V, VS = Open.
l
3.3 3.8 V
I
LEAK
V1, V2 and VS Inter Pin Leakage to
the Highest Supply
V1 = 28V, V2 = VS = 0V; V1 = VS = 0V,
V2 = 28V; V1 = V2 = 0V, VS = 28V
±3 μA
Ideal Diode Function
V
FR
Ideal Diode PowerPath Forward
Regulation Voltage
(V1 or V2) – VS, 2.7V ≤ (V1 or V2) ≤ 28V
l
10 20 35 mV
V
RTO
Ideal Diode PowerPath Fast Reverse
Turn-Off Threshold Voltage
(V1 or V2) – VS, 2.7V ≤ (V1 or V2) ≤ 28V
∆I
G
≤ –100μA/mV
l
–20 –35 –64 mV
I
G(SRC)
Gate Turn-Off Current G1 = G2 = V
MAX
– 1.5V
l
–2 –5 –10 μA
I
G(SNK)
Gate Turn-On Current V1 = V2 = 2.7V to 28V,
VS = (V1 or V2) – 40mV,
G1 = G2 = V
MAX
–1.5V.
l
2 5 10 μA
I
G(FASTSRC)
Gate Fast Turn-Off Source Current V1 = V2 = 2.7V to 28V,
VS = (V1 or V2) + 0.1V,
G1 = G2 = V
MAX
–1.5V.
l
–0.5 –2.5 –10 mA
I
G(FASTSNK)
Gate Fast Turn-On Sink Current V1 = V2 = 5V to 28V,
VS = (V1 or V2) – 0.1V,
G1 = G2 = V
MAX
– 1.5V.
l
0.3 0.7 2 mA
V
G(ON)
Gate Clamp Voltage I
GX
= 2μA, V
X
= 8V to 28V, VS = V
X
– 0.1V
Measure V
X
– V
GX
l
678 V
V
G(OFF)
Gate Off Voltage I
GX
= –2μA, V
X
= 2.7V to 28V, VS = V
X
+ 0.1V
Measure V
MAX
– V
GX
l
0.2 0.4 V
t
G(ON)
Gate Turn-On Time V
G(OFF)
to V
GS
≤ –3V, C
GATE
= 1nF (Note 5),
V1 = V2 = 12V
0.1 2.5 10 μs
t
G(OFF)
Gate Turn-Off Time V
G(ON)
to V
GS
≥ –1.5V, C
GATE
= 1nF (Note 6),
V1 = V2 = 12V
0.1 2.5 10 μs
Pushbutton Pin (PB)
V
PB(VOC)
PB Open-Circuit Voltage
I
PB
= –1μA
l
146 V
I
PB
PB Input Current
V
PB(VOC)
< V
PB
≤ 28V
0V ≤ V
PB
< V
PB(VOC)
l
l
–1 –10
±1
–25
μA
μA
V
TH_PB
PB Input Threshold Voltage PB Falling From High to Low
l
0.65 0.77 0.8 V
V
HYS_PB
PB Input Hysteresis
l
10 25 150 mV