SC198AMLTRT Semtech, SC198AMLTRT Datasheet - Page 3

• Manufacturer Part Number: SC198AMLTRT
• Description: IC DUAL DC-DC BUCK CONV 20-MLPQ
• Manufacturer: Semtech
• Type: Step-Down (Buck)r

Specifications of SC198AMLTRT

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: Programmable
• Current - Output: 800mA
• Frequency - Switching: 1MHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-MLPQ
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: SC198AMLTR

Absolute Maximum Ratings
V
V
V
Pin Voltage - All Other Pins (V) . . . . . . . . . -0.3 to (V
Output Short Circuit to GND Duration . . . . . Continuous
LXA and LXB Currents (A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2
ESD Protection Level
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-B.
(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.
Electrical Characteristics
Unless otherwise noted: V
Parameter
Input Voltage Range
V
Line Regulation
Load Regulation
Minimum Duty Cycle
LXA, LXB Current Limit
Quiescent Current
Shutdown Current
LXA and LXB
Leakage Current
P-Channel On Resistance
IN
OUT
LXA
OUT
(V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +7
and V
(V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to V
Accuracy
LXB
(1)
(V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-1 to V
(1)
IN
(kV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
= 3.6V, V
MODE/SYNC
Symbol
I
ΔV
LXA
ΔV
ΔV
DC
R
V
I
I
LIM
I
NOT RECOMMENDED FOR NEW DESIGN
SD
, I
DSP
LOAD
Q
IN
OUT
LINE
MIN
LXB
= V
IN
, L = 4.7μH, C = 10μF, T
I
OUT
V
V
I
OUT
IN
IN
= 10mA to 800mA, V
I
OUT
= 2.7 to 5.5V, V
= 4.0 to 5.5V, V
I
OUT
= 10mA to 800mA , V
V
IN
= 0mA, SYNC = 0, ENA, ENB = V
ENA
IN
= 10mA to 800mA, V
+ 0.3)
V
V
IN
IN
IN
+0.3
, V
= 5.5V, V
= 5.5V, V
+1
ENB
I
LXA
Conditions
= 0, LXA, LXB = Open
V
V
, I
A
OUT
OUT
LXB
= -40°C to +85°C. Typical values are at T
OUT
OUT
LX
= 100mA
Recommended Operating Conditions
Ambient Temperature Range (°C) . . . . . . . . . . . . . -40 to +85
V
Thermal Information
Thermal Resistance, Junction to Ambient
Maximum Junction Temperature (°C) . . . . . . . . . . . . . . +150
Storage Temperature Range (°C) . . . . . . . . . . . . -65 to +150
Peak IR Reflow Temperature (10s to 30s) (°C) . . . . . . . +260
= 1.8V
= 3.3V
LX
IN
= V
= 1.8V, I
= 3.3V, I
= 0V, PMOS
OUT
(V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7 to 5.5
IN
IN
, NMOS
= 3.3V, V
≥ 0.7V + V
OUT
OUT
OUT
= 1.8V
= 300mA
= 300mA
IN
= 5.0V
IN
OUT
Min
2.7
4.0
1.2
-3
-2
A
= 25°C for both outputs.
Typ
0.35
0.1
0.1
0.1
(2)
0.0008
Max
(°C/W) . . . . 31
5.5
5.5
0.2
18
50
SC198A
3
1
1
Units
%/mA
%/V
μA
μA
μA
μA
%
%
Ω
A
V
3