LT3970EMS-5#PBF Linear Technology, LT3970EMS-5#PBF Datasheet - Page 4

• Manufacturer Part Number: LT3970EMS-5#PBF
• Description: IC BUCK 5V 0.35A 10MSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT3970EMS-5#PBF

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 5V
• Current - Output: 350mA
• Frequency - Switching: 200kHz ~ 2.25MHz
• Voltage - Input: 4.2 ~ 40 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

ELECTRICAL CHARACTERISTICS
LT3970/LT3970-3.3/LT3970-5
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3970E is guaranteed to meet performance specifi cations
from 0°C to 125°C junction temperature. Specifi cations over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization, and correlation with statistical process controls. The
TYPICAL PERFORMANCE CHARACTERISTICS
4
3.32
3.31
3.30
3.29
3.28
3.27
90
80
70
60
50
40
30
20
0.01
–50
Effi ciency, V
LT3970-3.3 Output Voltage
V
IN
–25
= 24V
0.1
0
LOAD CURRENT (mA)
TEMPERATURE (°C)
OUT
25
V
V
FRONT PAGE APPLICATION
V
R1 = 1M
R2 = 576k
1
IN
IN
OUT
= 3.3V
50
= 12V
= 36V
= 3.3V
75
10
100 125
100
3970 G03a
3970 G01
150
5.04
5.02
5.00
4.98
4.96
4.94
90
80
70
60
50
40
30
0.01
–50
Effi ciency, V
LT3970-5 Output Voltage
FRONT PAGE APPLICATION
V
IN
–25
= 24V
0.1
0
LOAD CURRENT (mA)
TEMPERATURE (°C)
25
OUT
V
V
1
IN
IN
= 5V
50
= 12V
= 36V
LT3970I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT3970H is guaranteed over the full –40°C to
150°C operating junction temperature range. High junction temperatures
degrade operating lifetimes. Operating lifetime is derated at junction
temperatures greater than 125°C.
Note 3: Bias current fl ows into the FB pin.
Note 4: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the switch.
75
10
100 125
100
T
3970 G03b
A
3970 G02
= 25°C, unless otherwise noted.
150
1.220
1.215
1.205
1.195
1.210
1.200
4.0
3.0
2.5
1.5
3.5
2.0
–50
5
LT3970 Feedback Voltage
No-Load Supply Current
–25
10
0
15
TEMPERATURE (°C)
INPUT VOLTAGE (V)
25
FRONT PAGE APPLICATION
V
R1 = 1MΩ
R2 = 576k
LT3970-5
LT3970-3.3
20
OUT
50
= 3.3V
25
75
30
100 125
35
3970 G03
3970 G04
3970fa
150
40