LTC3721EUF-1 Linear Technology, LTC3721EUF-1 Datasheet - Page 2

• Manufacturer Part Number: LTC3721EUF-1
• Description: IC CTRLR PWM PUSH PULL HE 16QFN
• Manufacturer: Linear Technology

Specifications of LTC3721EUF-1

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 1MHz
• Duty Cycle: 50%
• Buck: No
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-QFN
• Frequency-max: 1MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Voltage - Supply: -

ABSOLUTE AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
LTC3721-1
V
UVLO to GND ............................................. – 0.3V to V
All Other Pins to GND
(Low Impedance Source) .........................– 0.3V to 5.5V
V
Consult LTC Marketing for parts specified with wider operating temperature ranges.
temperature range, otherwise specifications are at T
SYMBOL
Input Supply
V
V
I
I
V
R
SUVLO
SHYST
2
ELECTRICAL CHARACTERISTICS
CCST
CCRN
CCUV
CCHY
SHUNT
SHUNT
CC
CC
DRVB
DRVA
V
GND
to GND (Low Impedance Source) .......– 0.3V to 10V
(Current Fed) ................................................. 40mA
V
REF
NC
NC
CC
C
T
T
JMAX
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
= 125°C, θ
PARAMETER
V
V
Start-Up Current
Operating Current
Shunt Regulator Voltage
Shunt Resistance
System UVLO Threshold
System UVLO Hysteresis Current
GN PACKAGE
CC
CC
TOP VIEW
Undervoltage Lockout
UVLO Hysteresis
JA
W
= 100°C/W
16
15
14
13
12
11
10
9
NC
UVLO
SS
FB
R
COMP
CS
DPRG
LEB
(Chip Self-Regulates at 10.3V)
W W
U
LTC3721EGN-1
ORDER PART
MARKING
GN PART
NUMBER
W
37211
U
A
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, 10mA into V
CC
= 25°C. V
= V
The
UVLO
U
CC
(Note 1)
●
CC
– 0.3V
CC
CC
denotes the specifications which apply over the full operating
CC
CC
= 9.5V unless otherwise noted.
= 10mA
= 10mA to 17mA
V
Operating Temperature (Notes 5,6)
Storage Temperature Range ................. – 65°C to 125°C
Lead Temperature (GN Package only)
PGND
DRVB
DRVA
REF
16-LEAD (4mm × 4mm) PLASTIC QFN
V
LTC3721-1 ......................................... – 40°C to 85°C
(Soldering, 10sec) ............................................ 300°C
(PIN17) MUST BE SOLDERED TO PCB
CC
T
Output Current ............................... Self-Regulated
JMAX
1
2
3
4
EXPOSED PAD IS GND
= 125°C, θ
16
5
UF PACKAGE
TOP VIEW
15 14 13
6
17
CC
7
JA
= 100°C/W
8
CC
12
11
10
9
FB
R
COMP
CS
LEB
●
MIN
3.8
4.8
8.5
10.25
LTC3721EUF-1
10.3
TYP
145
ORDER PART
4.2
1.4
5.0
10
3
MARKING
NUMBER
UF PART
37211
MAX
10.7
10.8
11.5
230
3.5
5.2
6
sn37211 37211fs
UNITS
mA
µA
µA
Ω
V
V
V
V