lt3694-1 Linear Technology Corporation, lt3694-1 Datasheet - Page 3

• Manufacturer Part Number: lt3694-1
• Description: Lt3694/lt3694-1 - 36v, 2.6a Monolithic Buck Regulator With Dual Ldo
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
PARAMETER
V
Overvoltage Shutdown Threshold
Input Quiescent Current
Bias Quiescent Current
Shutdown Current
EN/UVLO Threshold, Bias On
EN/UVLO Threshold, Switching On
Reference Voltage Line Regulation
Switching Frequency
V
V
V
V
PGOOD Output Voltage Low
PGOOD Leakage
PGOOD Threshold (Relative to V
Switching Regulator
Feedback Pin Voltage
Feedback Pin Bias Current
Error Amplifier Transconductance
Error Amplifier Voltage Gain
TRK/SS Pull-Up Current
TRK/SS Threshold to Start Switching
V
V
V
V
V
Switch Leakage Current
Minimum Boost Voltage Above Switch
Switch Current Limit (Note 3)
Switch V
BST Operating Current
V
I
DA Current Limit
Minimum Switch Off-Time
L
IN
IH
IL
OH
OL
C1
C1
C1
C1
C1
F
, BST Diode
BST Diode
, SYNC
, SYNC
, CLKOUT
Internal Undervoltage Lockout
, CLKOUT
Source Current
Sink Current
Clamp Voltage
Switching Threshold
to Switch Current Gain
CESAT
FB
)
A
= 25°C, V
CONDITIONS
Not Switching
Not Switching
V
5V < V
R
I
I
I
V
(Note 8)
V
V
V
(Note 4)
(Note 3) 10% Duty Cycle
I
I
I
V
CLKOUT
CLKOUT
PGOOD
SW1
SW1
BST
EN/UVLO
PGOOD
C
C
IN
BST
T
= 0.6V
= 0.6V
The
= 40.2K
= 36V
= 100mA
= 3A
= 3A
– V
IN
= 250μA
= –50μA
= 50μA
= 2V
l
BIAS
IN
< 36V
= 0.1V
denotes the specifications which apply over the full operating
= 12V, V
= 36V
BIAS
= 3V, unless otherwise noted. (Notes 2, 9)
l
l
l
l
l
l
l
l
l
l
l
l
l
LT3694/LT3694-1
1.16
MIN
350
735
3.5
0.9
1.5
1.6
3.5
2.6
36
86
–2
35
0.01
0.75
0.01
TYP
500
750
–50
350
600
–20
600
3.8
0.1
1.2
1.0
0.2
3.6
1.8
4.9
0.8
3.6
38
10
90
–3
50
28
60
1
2
2
1
1000
–500
MAX
1.23
0.35
765
140
3.5
1.1
2.6
0.3
0.4
2.5
4.5
40
94
–4
70
10
4
2
2
6
UNITS
36941fa
3
MHz
%/V
V/V
A/V
mA
mA
mV
mV
mV
mV
mA
μA
nA
nA
μS
μA
μA
μA
μA
μA
ns
%
V
V
V
V
V
V
V
V
V
V
V
A
V
A