SC418ULTRT Semtech, SC418ULTRT Datasheet - Page 10

• Manufacturer Part Number: SC418ULTRT
• Description: IC BUCK SYNC ADJ 20MLPQ
• Manufacturer: Semtech
• Series: EcoSpeed™, SmartDrive™r
• Type: Step-Down (Buck)r

Specifications of SC418ULTRT

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.5 ~ 5.5 V
• Frequency - Switching: 200kHz ~ 1MHz
• Voltage - Input: 3 ~ 28 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-MLPQ
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -
• Other names: SC418ULTRTTR

Typical Characteristics (continued)
Characteristics in this section are based on using the Detailed Application Circuit.
Frequency vs. Load — Ultrasonic Power-Save Mode
100
220
250
200
250
320
300
280
260
240
200
300
150
300
200
150
100
50
50
Frequency vs. Load — Forced Continuous Mode
0
0
0
0
Internally biased at V
0
Externally biased at VDDA/VDDP = 5V, V
Internally biased at V
Frequency vs. Load — Power-Save Mode
1
1
1
2
2
2
LDO
LDO
3
3
3
= 5V, V
= 5V, V
4
4
4
IN
IN
= 12V, V
I
I
= 12V, V
I
OUT
OUT
OUT
5
5
5
(A)
(A)
(A)
IN
OUT
OUT
= 12V, V
6
6
6
= 1.050V, R
= 1.050V
7
7
OUT
7
= 1.050V
PSV
8
8
8
= 115kΩ
9
9
9
10
10
10
Output Over-Current Response — Normal Operation
(500mV/div)
0.20
0.15
0.10
0.05
0.00
(5A/div)
PGOOD
(5V/div)
(5A/div)
VOUT
IOUT
Internally biased at V
0
V
LX
RIPPLE
V
IN
1
= 12V, V
vs. Load — Forced Continuous Mode
2
OUT
VOUT
= 1.05V, V
LDO
3
= 5V, V
P-P
LDO
4
Time (100µs/div)
IN
= 5V , I
= 12V, V
I
OUT
5
(A)
OUT
ramped to trip point
OUT
6
= 1.050V
7
8
SC418
9
10
10