E-L6919ETR STMicroelectronics, E-L6919ETR Datasheet - Page 29

• Manufacturer Part Number: E-L6919ETR
• Description: IC CTRLR 5BIT PROG 2PHASE 28SOIC
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of E-L6919ETR

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 1.55 V
• Current - Output: 2A
• Frequency - Switching: 150kHz
• Voltage - Input: 5 ~ 12 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (7.5mm Width)
• Power - Output: 2W
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 6.5 V
• Maximum Operating Temperature: 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-4592-2

Figure 25 shows the mosfets temperature versus output current in steady state condition without any air-flow
or heat sink. It can be observed that the mosfets are under 100ºC in any conditions. Load regulation is also re-
ported from 10A to 45A.
Figure 25. Mosfet Temperature and Load Regulation
DYNAMIC PERFORMANCES
Figure 26 shows the system response to a load transient from 3A to 45A. The output voltage is contained in the
±50mV range. Additional output capacitors can help in reducing the initial voltage spike mainly due to the ESR.
Figure 26. 3A to 45A Load Transient Response
Figure 27 shows the system response to a VID transient from 1.200V to 0.800V and vice versa at minimum load (3A).
Figure 27. Dynamic VID Response
100
90
80
70
60
50
40
30
20
0
5
10
High-side MOS Q2
High-side MOS Q4
Low -side MOS Q1
Low -side MOS Q3
Output Current [A]
15
20
25
30
35
40
45
1.250
1.240
1.230
1.220
1.210
1.200
1.190
1.180
1.170
0
5
10
15
Output Current [A]
20
25
30
35
40
L6919E
45
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