LTC3722EGN-2 Linear Technology, LTC3722EGN-2 Datasheet - Page 3

• Manufacturer Part Number: LTC3722EGN-2
• Description: IC CTRLR PWM VOLTAGE-MODE 24SSOP
• Manufacturer: Linear Technology

Specifications of LTC3722EGN-2

• Pwm Type: Voltage Mode, Full Bridge
• Number Of Outputs: 1
• Frequency - Max: 1MHz
• Duty Cycle: 98.5%
• Voltage - Supply: 3.8 V ~ 10.3 V
• Buck: No
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: Yes
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 24-SSOP
• Frequency-max: 1MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

elecTrical characTerisTics
perature range, otherwise specifications are at T
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
CCST
CCRN
CS
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
CS 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
= 25°C. V
CONDITIONS
Measured on V
Measured on V
V
No Load on Outputs
Current into V
Current into V
Measured on UVLO Pin, 10mA into V
Current Flows Out of UVLO Pin
SBUS = 1.5V
SBUS = 2.25V
SBUS = 1.5V, ADLY/PDLY = 1.7V
R
Measured on SBUS
SBUS = V
CS = 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)
A
CC
CC
DPRG
= 25°C, C
= V
= 6.5V to 9.5V
The
CC
= 60.4K
= 9.5V, C
UVLO
l
REF
denotes the specifications which apply over the full operating temp-
T
– 0.3V
, ADLY, PDLY = 1V
CC
CC
= 270pF
CC
CC
T
= 10mA
= 10mA to 17mA
T
C
T
T
= 270pF , R
= 1V
= 2.25V
T
= 4V,
DPRG
LTC3722-1/LTC3722-2
CC
= 60.4k, R
l
l
l
l
l
l
SPRG
MIN
225
215
3.8
4.8
8.5
1.4
2.1
1.6
95
= 100k, unless otherwise noted.
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
70
50
30
68
5
4
0
MAX
10.5
10.8
11.5
230
275
285
3.5
5.2
1.6
2.4
0.5
2.2
8
372212fa
UNITS

kHz
kHz
kHz
mA
mA
mA
µA
µA
µA
µA
ns
ns
ns
%
%
Ω
V
V
V
V
V
V
V
V
V