SC121ULTRT Semtech, SC121ULTRT Datasheet - Page 3

• Manufacturer Part Number: SC121ULTRT
• Description: IC BOOST SYNC 1.2A MLPD-6
• Manufacturer: Semtech
• Type: Step-Up (Boost)r

Specifications of SC121ULTRT

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 3.3V, 1.8 ~ 5 V
• Current - Output: 1.2A
• Frequency - Switching: 1.2MHz
• Voltage - Input: 0.7 ~ 4.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 6-MLPD-UT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: SC121ULTRTTR

Absolute Maximum Ratings
IN, OUT, LX, FB (V) . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.0
EN (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to (V
ESD Protection Level
Electrical Characteristics
Exceeding the above specifi cations may result in permanent damage to the device or device malfunction. Operation outside of the parameters
specifi ed in the Electrical Characteristics section is not recommended.
NOTES:
(1) Tested according to JEDEC standard JESD22-A114.
(2) Calculated from package in still air, mounted to 3 x 4.5 (in), 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.
Unless otherwise noted V
Parameter
Input Voltage Range
Minimum Startup Voltage
Shutdown Current
Operating Supply Current
Internal Oscillator Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Output Voltage
Adjustable Output Voltage Range
Regulation Feedback Reference Volt-
age Accuracy (Internal or External
Programming)
FB Pin Input Current
Startup Time
(1)
IN
(1)
= 2.5V, C
(kV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
IN
= C
Symbol
OUT
V
V
V
D
OUT_RNG
I
D
V
f
Reg-Ref
V
SHDN
= 22μF, L
t
IN-SU
I
OSC
I
MAX
OUT
MIN
FB
SU
Q
IN
1
= 4.7μH, T
IN
For V
+ 0.3)
A
I
= -40 to +85°C. Typical values are at T
OUT
IN
< 1mA, T
T
such that D
A
I
OUT
= 25°C, V
Conditions
V
= 0, V
V
Recommended Operating Conditions
Ambient Temperature Range (°C) . . . . . . . . . . . . -40 to +85
V
V
Thermal Information
Thermal Res. MLPD, Junction-Ambient
Maximum Junction Temperature (°C) . . . . . . . . . . . . . . . 150
FB
Storage Temperature Range (°C) . . . . . . . . . . . -65 to +150
Peak IR Refl ow Temperature (10s to 30s) (°C) . . . . . . +260
FB
IN
OUT
= 1.2V
A
= 0V
(V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.7 to 4.5
= 0°C to 85°C
EN
(V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8 to 5.0
MIN
EN
= V
= 0V
< D < D
IN
MAX
A
= 25°C.
Min
-1.5
0.7
1.8
Typ
0.85
0.1
3.5
1.2
3.3
90
1
(2)
(°C/W) . . . . . . . 84
Max
4.5
5.0
1.5
0.1
20
1
SC121
Units
MHz
mA
μA
μA
ms
%
%
%
V
V
V
V
3