E-L6919ETR STMicroelectronics, E-L6919ETR Datasheet - Page 31

• 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 29 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 105°C in any conditions. Load regulation is also re-
ported from 10A to 55A.
Figure 29. Mosfet Temperature and Load Regulation.
Figure 30 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 30. 3A to 45A Load Transient Response
Figure 31 shows the system response to a VID transient from 1.200V to 0.800V and vice versa at minimum load (3A).
Figure 31. Dynamic VID Response
115
105
95
85
75
65
55
45
35
25
0
5
10 15 20 25 30 35 40 45 50 55 60
High-side M OS Q2
High-side M OS Q4
Lo w-side M OS Q1
Lo w-side M OS Q3
Output Current [A]
1.235
1.225
1.215
1.205
1.195
1.185
1.175
1.165
1.155
0
5 10 15 20 25 30 35 40 45 50 55 60
Output Current [A]
L6919E
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