Datasheet

LT4320/LT4320-1
3
4320fb
For more information www.linear.com/LT4320
electrical characteristics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
OUTP Voltage Range
l
9 72 V
OUTP Undervoltage Lockout (UVLO) Threshold INn = OUTP, Other IN = 0V
l
6.2 6.6 7.0 V
V
INT
INn Turn-On/Off Threshold OUTP = 9V, Other IN = 0V
l
1.3 3.7 V
I
OUTP
OUTP Pin Current
INn = OUTP+ ∆V
SD(MAX)
+ 5mV, Other IN = 0V
l
1.0 1.5 mA
I
INn
INn Pin Current
at 9V
at 72V
INn = OUTP+ ∆V
SD(MAX)
+ 5mV, Other IN = 0V
l
l
44
0.3
63
0.4
µA
mA
∆V
SD
Topside Source-Drain Regulation Voltage (INn – OUTP)
LT4320
LT4320-1
l
l
8
26
20
40
35
55
mV
mV
∆V
TGATE
Top Gate Drive (TGn – INn)
INn = OUTP+ ∆V
SD(MAX)
+ 5mV, 10μA Out of
TGn, Other IN = 0V
l
6.6 10.8 V
V
BGATE
Bottom Gate Drive (BGn) INn = OUTP, 10μA Out of BGn, Other IN = 0V
l
7.0 12 V
I
TGUn
Top Gate Pull-Up Current TGn – INn = 0V, INn = OUTP + 0.1V
TGn – INn = 5V, INn = OUTP + 0.1V
Current Flows Out of TGn, Other IN = 0V
l
l
425
120
µA
µA
I
TGSn
Top Gate Pull-Down Current to INn TGn – INn = 5V, INn = OUTP – 0.25V
Current Flows Into TGn, Other IN = 0V
l
1.25 mA
I
TGGn
Top Gate Pull-Down Current to OUTN INn = 0V, Other IN = OUTP = 9.0V, TGn = 5V
Current Flows Into TGn
l
6.0 mA
I
BGUn
Bottom Gate Pull-Up Current BGn = 5V; INn = OUTP = 9.0V, Other IN = 0V
Current Flows Out of BGn
l
1.9 mA
I
BGDn
Bottom Gate Pull-Down Current BGn = 5V; INn = 0V, Other IN = OUTP = 9.0V
Current Flows Into BGn
l
12.5 mA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Unless otherwise specified,
exposure to any Absolute Maximum Rating condition for extended periods
may affect device reliability and lifetime.
Note 2: All voltages are referenced to OUTN = 0V unless otherwise specified.
Note 3: Externally forced voltage absolute maximums. The LT4320 may
exceed these limits during normal operation.