Datasheet
LTC3723-1/LTC3723-2
2
372312f
V
CC
to GND (Low Impedance Source) .......–0.3V to 10V
(Chip Self-Regulates at 10.3V)
UVLO to GND............................................. –0.3V to V
CC
All Other Pins to GND
(Low Impedance Source) .........................–0.3V to 5.5V
V
CC
(Current Fed) ................................................. 40mA
ABSOLUTE AXI U RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UUW
(Note 1)
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 9.5V unless otherwise noted.
V
REF
Output Current ............................... Self-Regulated
Operating Temperature (Notes 5,6)
LTC3723E ........................................... –40°C to 85°C
Storage Temperature Range ................. –65°C to 125°C
Lead Temperature (Soldering, 10sec)................... 300°C
T
JMAX
= 125°C, θ
JA
= 100°C/W
ORDER PART NUMBER
GN PART MARKING
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTC3723EGN-1
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
37231
1
2
3
4
5
6
7
8
TOP VIEW
GN PACKAGE
16-LEAD PLASTIC SSOP
16
15
14
13
12
11
10
9
V
REF
SDRB
SDRA
DRVB
V
CC
DRVA
GND
C
T
SPRG
UVLO
SS
FB
R
LEB
COMP
CS
DPRG
T
JMAX
= 125°C, θ
JA
= 100°C/W
ORDER PART NUMBER GN PART MARKING
LTC3723EGN-2
37232
1
2
3
4
5
6
7
8
TOP VIEW
GN PACKAGE
16-LEAD PLASTIC SSOP
16
15
14
13
12
11
10
9
V
REF
SDRB
SDRA
DRVB
V
CC
DRVA
GND
C
T
SPRG
UVLO
SS
FB
DPRG
COMP
CS
RAMP
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Supply
V
CCUV
V
CC
Undervoltage Lockout Measured on V
CC
10.25 10.7 V
V
CCHY
V
CC
UVLO Hysteresis Measured on V
CC
3.8 4.2 V
I
CCST
Start-Up Current V
CC
= V
UVLO
– 0.3V ● 145 230 µA
I
CCRN
Operating Current No Load on Outputs 3 8 mA
V
SHUNT
Shunt Regulator Voltage Current into V
CC
= 10mA 10.3 10.8 V
R
SHUNT
Shunt Resistance Current into V
CC
= 10mA to 17mA 1.4 3.5 Ω
SUVLO System UVLO Threshold Measured on UVLO Pin, 10mA into V
CC
4.8 5.0 5.2 V
SHYST System UVLO Hysteresis Current Current Flows Out of UVLO Pin, 10mA into V
CC
8.5 10 11.5 µA
Pulse Width Modulator
ROS Ramp Offset Voltage Measured on COMP, RAMP = 0V 0.65 V
I
RMP
Ramp Discharge Current RAMP = 1V, COMP = 0V, C
T
= 4V, 3723-1 Only 50 mA