SC194AMLTRT Semtech, SC194AMLTRT Datasheet - Page 13

• Manufacturer Part Number: SC194AMLTRT
• Description: IC SYNC BUCK CONV 1A 10-MLP
• Manufacturer: Semtech
• Type: Step-Down (Buck)r

Specifications of SC194AMLTRT

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: Adjustable
• Current - Output: 1A
• Frequency - Switching: 1MHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MLP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: SC194AMLTR

© 2006 Semtech Corp.
POWER MANAGEMENT
Typical Characteristics (Cont.)
Condition V
0.22
0.20
0.18
0.16
0.14
0.12
0.10
2.7
Condition V
100% Duty Cycle Mode
SYNC/PWM=1.15MHz ext clock
N-Channel R
IN
PWM Operation
=3.6V, V
SYNC/PWM=V
Time (1us/div)
3.2
Time (400ns/div)
IN
=2.6V, V
OUT
=1.8V, l
3.7
OUT
DSON
=1.8V, l
IN
OUT
vs. Input Voltage
V
T
T
T
A
IN
A
A
=150mA,
= 85 °C
= 25 °C
= -40 °C
(V)
OUT
4.2
=1.4A,
4.7
V
I
V
L
V
I
V
OUT
LX
LOAD
(200mA/div)
OUT
LX
(5V/div)
(2V/div)
(10mV/div)
(50mV/div)
(1A/div)
5.2
13
1050
1040
1030
1020
1010
1000
990
980
970
960
950
Condition V
Condition V
-50
Switching Frequency vs. Temperature
-30
PSAVE Operation
IN
PSAVE Start up
IN
=3.6V, V
SYNC/PWM=GND
Time (200us/div)
SYNC/PWM=GND
=3.6V, V
Time (1us/div)
-10
OUT
OUT
10
=1.8V, l
=1.8V, l
V
V
IN
IN
30
= 3.6V
= 2.7V
T
J
OUT
= (°C)
OUT
=150mA,
=10mA,
50
V
IN
= 5.5V
70
PRELIMINARY
90
www.semtech.com
EN (2V/div)
V
l
IN
V
I
V
OUT
SC194A
L
OUT
(100mA/div)
LX
(200mA/div)
(1V/div)
(5V/div)
110
(20mV/div)
130