LT3506 LINER [Linear Technology], LT3506 Datasheet - Page 3

• Manufacturer Part Number: LT3506
• Description: Dual Monolithic 1.6A Step-Down Switching Regulator
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
V
I
I
V
I
V
gm
A
I
V
V
f
DC
V
f
I
V
I
V
I
I
V
V
V
I
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3506E/LT3506AE are guaranteed to meet performance
specifications from 0°C to 85°C. Specifications over the –40°C to 85°C
operating temperature range are assured by design, characterization and
INQ
INSD
FB
VC
SW
FOLD
SW
LSW
BOOST
RUN/SS
LPG
V
IN(MIN)
FB
FB(REG)
VC(THRESH)
VC(CLAMP)
FB(SWTHRESH)
SW(SAT)
BOOST(MIN)
RUN/SS(THRESH)
FB(PGTHRESH)
PG(LOW)
EA
PARAMETER
Undervoltage Lockout
Quiescent Current
Shutdown Current
Feedback Voltage
FB Pin Bias Current
Reference Line Regulation
Error Amp GM
Error Amp Voltage Gain
V
V
V
V
Switching Frequency
Switching Phase
Maximum Duty Cycle
Frequency Shift Threshold on FB
Foldback Frequency
Switch Current Limit
Switch V
Switch Leakage Current
Minimum Boost Voltage Above Switch
BOOST Pin Current
RUN/SS Current
RUN/SS Threshold
V
PG Voltage Output Low
PG Pin Leakage
C
C
C
C
FB
Sink Current
Source Current
Switching Threshold
Clamp Voltage
PG Threshold
CESAT
(Note 4)
A
= 25°C, V
CONDITIONS
Not Switching
V
–40°C to 85°C, EDHD
–40°C to 85°C, EFE
–40°C to 125°C, IFE, IDHD
V
V
V
V
LT3506
LT3506A
(Note 5)
LT3506
LT3506A
V
(Note 3)
I
I
I
V
V
V
SW
SW
SW
RUNSS
FB
IN
FB
FB
FB
FB
FB
PG
The
= 5V to 25V
= 800mV, V
= 0.6V, V
= 1.2V, V
= 0V
Rising
= 640mV, I
= 1A
= 1A
= 1A
= 2V
= 0V
●
IN
denotes the specifications which apply over the full operating
= 5V, V
C
C
= 0V
= 1100mV
PG
C
correlation with statistical process controls. The LT3506I/LT3506AI are
guaranteed and tested over the full –40°C to 125°C operating temperature
range.
Note 3: Current limit is guaranteed by design and/or correlation to static
test. Slope compensation reduces current limit at high duty cycle.
Note 4: Switch V
Note 5: Switching phase is guaranteed by design.
= 0.4V
= 250µA
BOOST
= 8V, unless otherwise noted. (Note 2)
CESAT
guaranteed by design.
●
●
●
●
●
LT3506/LT3506A
MIN
792
784
784
500
2.0
0.3
89
78
1
0.005
0.22
TYP
800
800
800
350
400
575
180
170
210
720
3.4
3.8
0.7
1.9
1.1
0.4
2.6
1.5
2.1
0.8
0.1
30
40
30
30
93
88
20
MAX
808
816
816
100
650
3.6
4.8
1.2
3.6
2.5
0.4
45
10
30
1
uMhos
UNITS
3506afb

MHz
%/V
Deg
kHz
kHz
mA
mV
mV
mV
mV
mA
mV
µA
µA
µA
nA
µA
µA
µA
%
%
V
V
V
V
A
V
V
V