LTC3722-1 LINER [Linear Technology], LTC3722-1 Datasheet - Page 3

• Manufacturer Part Number: LTC3722-1
• Description: Synchronous Dual Mode Phase Modulated Full Bridge Controllers
• Manufacturer: LINER [Linear Technology]

temperature range, otherwise specifications are at T
unless otherwise noted.
SYMBOL
Input Supply
V
V
I
I
V
R
SUVLO
SHYST
Delay Blocks
DTHR
DHYS
DTMO
DFXT
DFTM
Phase Modulator
I
I
DC
DC
Oscillator
OSCI
OSCT
OSCV
OSYT
OSYW
OSYR
ELECTRICAL CHARACTERISTICS
CCST
CCRN
RMP
SLP
CCUV
CCHY
SHUNT
SHUNT
MAX
MIN
PARAMETER
V
V
Start-Up Current
Operating Current
Shunt Regulator Voltage
Shunt Resistance
System UVLO Threshold
System UVLO Hysteresis Current
Delay Pin Threshold
ADLY and PDLY
Delay Hysteresis Current
ADLY and PDLY
Delay Timeout
Fixed Delay Threshold
Fixed Delay Time
Ramp Discharge Current
Slope Compensation Current
Maximum Phase Shift
Minimum Phase Shift
Initial Accuracy
Total Variation
C
SYNC Threshold
Minimum SYNC Pulse Width
SYNC Frequency Range
CC
CC
T
Ramp Amplitude
Under Voltage Lockout
UVLO Hysteresis
A
CONDITIONS
Measured on V
Measured on V
V
No Load on Outputs
Current into V
Current into V
Measured on UVLO Pin, 7mA into V
Current Flows Out of UVLO Pin, 7mA into V
SBUS = 1.5V
SBUS = 2.25V
SBUS = 1.5V, ADLY/PDLY = 1.7V
R
Measured on SBUS
ADLY,PDLY = 1V, SBUS = V
RAMP = 1V, COMP = 0V, C
LTC3722-1 Only
Measured on CS, C
COMP = 4.5V
COMP = 0V
T
V
Measured on C
Measured on SYNC
Measured at Outputs (Note 2)
Measured at Outputs (Note 2)
= 25 C. V
A
CC
DPRG
CC
= 25 C, C
= V
= 6.5V to 9.5V
The
= 60.4K
UVLO
CC
T
– 0.3V
denotes the specifications which apply over the full operating
CC
CC
= 270pF
= 9.5V, C
CC
CC
T
= 10mA
= 10mA to 17mA
C
T
T
= 1V
= 2.25V
T
T
= 270pF, R
REF
= 4V,
LTC3722-1/LTC3722-2
CC
DPRG
CC
= 60.4k, R
MIN
225
215
3.8
4.8
8.5
1.4
2.1
1.6
95
SPRG
= 100k, T
10.25
1000
10.3
2.25
98.5
TYP
145
100
250
250
100
4.2
1.1
5.0
1.5
1.3
2.2
1.9
10
68
70
50
30
5
4
0
A
= t
MAX
10.5
10.8
11.5
230
275
285
3.5
5.2
1.6
2.4
0.5
2.2
8
MIN
to t
UNITS
372212i
MAX
3
kHz
kHz
kHz
mA
mA
mA
ns
ns
ns
%
%
V
V
A
V
V
A
V
V
V
A
A
V
V
,