LT3570IFE#PBF Linear Technology, LT3570IFE#PBF Datasheet - Page 6

• Manufacturer Part Number: LT3570IFE#PBF
• Description: IC PWM BUCK BST DIV CM 20TSSOP
• Manufacturer: Linear Technology

Specifications of LT3570IFE#PBF

• 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: 20-TSSOP Exposed Pad, 20-eTSSOP, 20-HTSSOP
• 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

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