WM8310GEB/V Wolfson Microelectronics, WM8310GEB/V Datasheet - Page 278

• Manufacturer Part Number: WM8310GEB/V
• Description: POWER MANAGEMENT SUBSYSTEM, 169BGA
• Manufacturer: Wolfson Microelectronics

Specifications of WM8310GEB/V

• Supply Voltage: 7V
• No. Of Step-down Dc - Dc Converters: 4
• No. Of Ldo Regulators: 11
• Digital Ic Case Style: BGA
• No. Of Pins: 169
• No. Of Regulated Outputs: 13
• Operating Temperature Range: -40°C To
• Rohs Compliant: Yes
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

WM8310
30.5 LDO REGULATOR EXTERNAL COMPONENTS
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The recommended connections to the LDO Regulators are illustrated in Figure 36.
Figure 36 LDO Regulators External Components
When selecting suitable capacitors, is it imperative that the effective capacitance is within the
required limits at the applicable input/output voltage of the converter. Ceramic X7R or X5R types are
recommended.
Wolfson recommends the following external components for use with LDO Regulators 1 to 6.
Table 111 Recommended External Components - LDO1 to LDO6
Wolfson recommends the following external components for use with LDO Regulators 7 to 10.
Table 112 Recommended External Components - LDO7 to LDO10
Wolfson recommends the following external components for use with LDO Regulators 11 to 13.
Table 113 Recommended External Components - LDO11 to LDO13
Note: Equivalent circuit applies for LDO2 through to LDO10.
COMPONENT
COMPONENT
COMPONENT
1.5V – 5.5V
C
C
C
OUT
OUT
OUT
LDO1VDD
C
C
(LDO11)
(LDO12)
(LDO13)
C
C
OUT
OUT
IN
IN
WM8310
LDO1
VALUE
VALUE
VALUE
2.2μF
1.0μF
1.0μF
1.0μF
0.1μF
0.1μF
2.2μF
C
IN
LDO1VOUT
GND
MuRata GRM155R61A105KE15
MuRata GRM155R61A105KE15
MuRata GRM155R61A105KE15
MuRata GRM033R60J104KE19
MuRata GRM033R60J104KE19
Kemet C0402C225M9PAC
Kemet C0402C225M9PAC
C
PART NUMBER
PART NUMBER
PART NUMBER
OUT
V
O
Load
PP, December 2009, Rev 3.0
SIZE
0402
SIZE
0402
0402
SIZE
Pre-Production
0402
0201
0201
0402
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