SC189CSKTRT Semtech, SC189CSKTRT Datasheet - Page 11
![no-image](/images/manufacturer_photos/0/5/595/semtech_sml.jpg)
SC189CSKTRT
Manufacturer Part Number
SC189CSKTRT
Description
IC BUCK 1.2V 1.5A SOT23-5
Manufacturer
Semtech
Type
Step-Down (Buck)r
Datasheet
1.SC189CSKTRT.pdf
(24 pages)
Specifications of SC189CSKTRT
Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
1.2V
Current - Output
1.5A
Frequency - Switching
2.5MHz
Voltage - Input
2.9 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Other names
SC189CSKTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SC189CSKTRT
Manufacturer:
SEMTECH/美国升特
Quantity:
20 000
Typical Waveforms
Circuit Conditions: V
© 2009 Semtech Corp.
100mV/div
500mA/div
500mA/div
10mV/div
2V/div
5V/div
2V/div
1V/div
Transient Response (V
V
V
V
I
V
V
OUT
OUT
OUT
V
OUT
I
LX
EN
LX
IN
V
R
V
I
V
I
Output Voltage Ripple (V
OUT
OUT
IN
IN
IN
OUT
=5.0V
=5.0V
=5.0V
=0A
=0A to 0.5A
=1k
Start Up (Enable)(V
Output Voltage Ripple (V
Transient Response (V
OUT
=3.3V (SC189ZULTRT); L= 2.2uH (TOKO: 1071AS-2R2); C
Start Up (V
(continued)
200µs/div
500ns/div
50µs/div
OUT
=3.3V; 0A to 0.5A)
OUT
OUT
=3.3V)
=3.3V)
OUT
OUT
=3.3V)
OUT
=3.3V)
=3.3V)
11
IN
= C
500mA/div
100mV/div
500mA/div
10mV/div
Transient Response (V
OUT
2V/div
5V/div
2V/div
1V/div
V
V
V
I
V
V
OUT
OUT
OUT
V
OUT
= 10uF/6.3V (Murata: GRM21BR60J106K).
I
LX
LX
EN
IN
V
R
V
I
V
I
Output Voltage Ripple (V
OUT
OUT
IN
IN
OUT
IN
=5.0V
=5.0V
=5.0V
=1.5A
=0.5A to 1A
=2.2
Start Up (Enable)(V
Output Voltage Ripple (V
Transient Response (V
Start Up (V
OUT
200µs/div
500ns/div
50µs/div
=3.3V; 0.5A to 1.0A)
OUT
OUT
=3.3V)
=3.3V)
OUT
OUT
=3.3V)
OUT
www.semtech.com
=3.3V)
=3.3V)
SC189