L5980TR STMicroelectronics, L5980TR Datasheet - Page 25

• Manufacturer Part Number: L5980TR
• Description: IC REG SW 0.7A STEPDOWN 8-VFQFPN
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L5980TR

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.6 ~ 18 V
• Current - Output: 700mA
• Frequency - Switching: 250kHz ~ 1MHz
• Voltage - Input: 2.9 ~ 18 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-VFQFN, 8-VFQFPN
• Power - Output: 1.5W
• For Use With: 497-6384 - BOARD EVAL FOR L5980
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6858-2; L5980TR

L5980
Equation 25
For example with V
ESR = 50 mΩ, the type II compensation network is:
In
35 kHz and the phase margin is 49°.
Figure 15
is shown the module and phase of the open loop gain. The bandwidth is about
R
1
OUT
=
1.1kΩ
= 1.2 V, V
,
Doc ID 13003 Rev 6
R
C
2
IN
5
=
= 12 V, I
=
249Ω
------------------------------------------------------------- -
2π R
⋅
,
4
O
R
⋅
= 0.7 A, L = 22 μH, C
4
C
C
=
4
4
⋅
12kΩ
4 BW
⋅
,
–
C
1
4
=
47nF
Application information
,
OUT
C
= 220 μF,
5
=
68pF
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