LT3570IUF#TRPBF Linear Technology, LT3570IUF#TRPBF Datasheet - Page 6
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LT3570IUF#TRPBF
Manufacturer Part Number
LT3570IUF#TRPBF
Description
IC PWM BUCK BST DIV CM 24QFN
Manufacturer
Linear Technology
Datasheet
1.LT3570EFEPBF.pdf
(20 pages)
Specifications of LT3570IUF#TRPBF
Topology
Step-Down (Buck) (1), Step-Up (Boost) (1), Linear (LDO) (1)
Function
Automotive
Number Of Outputs
3
Frequency - Switching
500kHz ~ 2.1MHz
Voltage/current - Output 1
Adj to 0.8V, 1.5A
Voltage/current - Output 2
Adj to 0.8V, 1.5A
Voltage/current - Output 3
Controller
W/led Driver
No
W/supervisor
No
W/sequencer
No
Voltage - Supply
2.5 V ~ 36 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
*
Package / Case
24-QFN
Frequency-max
2.75MHz
Duty Cycle
95%
Pwm Type
Current Mode
Buck
Yes
Boost
Yes
Flyback
No
Inverting
No
Doubler
No
Divider
Yes
Cuk
No
Isolated
No
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
LT3570
TYPICAL PERFORMANCE CHARACTERISTICS
6
3.0
2.5
2.0
1.5
1.0
0.5
30
25
20
15
10
0
5
0
0
BOOST Pin Current
vs Switch Current
0
SW2 Current Limit vs Duty Cycle
10
20
0.2
30
T
J
DUTY CYCLE (%)
= –40°C
CURRENT (A)
40
0.4
T
J
50
= 25°C
60
0.6
T
J
70
= 125°C
T
T
T
80
0.8
J
J
J
= 125°C
= 25°C
= –40°C
90
3570 G12
3570 G14
100
1.0
350
300
250
200
150
100
50
14
12
18
16
10
0
8
6
4
2
0
1
0
SW2 Saturation Voltage
vs SW2 Current
NPN_DRV Output Current vs V
0.1
5
0.2 0.3
10
T
J
= 25°C
15
CURRENT (A)
VOLTAGE (V)
0.4
0.5
20
0.6
25
0.7
T
J
T
= –40°C
30
T
T
T
J
0.8
J
J
J
= 125°C
= 125°C
= 25°C
= –40°C
35
0.9 1.0
IN3
3570 G13
3570 G15
40
3570fb