L4972AD STMicroelectronics, L4972AD Datasheet - Page 8

• Manufacturer Part Number: L4972AD
• Description: IC REG SW 2A 5.1-40V STDN 20SOIC
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L4972AD

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 5.1 ~ 40 V
• Current - Output: 2A
• Frequency - Switching: 100kHz
• Voltage - Input: 15 ~ 50 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Power - Output: 3.75W
• Output Voltage: 40 V
• Output Current: 2 A
• Input Voltage: 15 V to 50 V
• Switching Frequency: 90 KHz to 110 KHz
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Duty Cycle (max): 90 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-4206-5; 497-4206-5; 497-4207-5

L4972A
Table 5. Electrical Characteristcs (continued)
Refer to the test circuit, T
specified.
Figure 8.
TYPICAL PERFORMANCES (using evaluation board) :
n = 83% (V
V
Line regulation = 12mV (V
Load regulation = 7mV (I
for component values Refer to the fig. 8 (Part list).
Figure 9. Component Layout of fig. 8. Evaluation Board Available (only for DIP version)
8/22
Symbol
o RIPPLE
V
V
I
4R
4H
4
Rising Threshold Voltage
Hysteresis
Input Bias Current
= 30mV (at 1A)
i
= 35V ; V
Parameter
o
= V
o
J
i
= 25°C, V
= 0.5 to 2A)
REF
= 15 to 50V)
; I
o
= 2A ; f
i
= 35V, R4 = 30KΩ, C9 = 2.7nF, f
V
9
= V
sw
13
= 100KHz)
Test Condition
Min.
4.95
0.4
SW
= 100KHz typ, unless otherwise
Typ.
5.1
0.5
1
Max.
5.25
0.6
3
Unit
µA
V
V
Fig.
15
15
15