LP5551SQX/NOPB National Semiconductor, LP5551SQX/NOPB Datasheet - Page 18

• Manufacturer Part Number: LP5551SQX/NOPB
• Description: IC ENERGY MGMNT SYSTEM 36-LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LP5551SQX/NOPB

• Applications: Handheld/Mobile Devices
• Current - Supply: 431µA
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-LLP
• For Use With: LP5551SQEV - BOARD EVALUATION LP5551SQ
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LP5551SQX

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R3 - Status Register
Address 0x3
Type Read Only
Reset Default 8h’0F
R4 - PWI Version Number Register
Address 0x4
Type Read Only
Reset Default 8h’01
R5 - N-Well Bias Register
Address 0x5
Type R/W
Reset Default 8h’00
R6 - P-Well Bias Register
Address 0x6
Type R/W
Reset Default 8h’00
Bit
7
6
5
4
3
2
1
0
Bit
7:0
Bit
7
6:2
0:1
Field Name
Sign
Voltage
Unused
Field Name
Reserved
Reserved
User Bit
User Bit
Fixed OK
IO OK
Memory OK
Core OK
Field Name
Version
Description or Comment
1: Negative offset
0: Positive offset
Sign Data Code [7]
0
1
Description or Comment
Reserved, read returns 0
Reserved, read returns 0
Unused, read returns 0
Unused, read returns 0
Unused, read returns 1
Unused, read returns 1
Unused, read returns 1
Unused, read returns 1
Description or Comment
Read transaction will return 8h’01 indicating PWI 1.0 specification. Write
transactions to this register are ignored.
18
Voltage Data Code [6:2] Voltage Offset from core
5h’19 – 5h’1f
5h’01 – 5h’18
5h’00
5h’00
5h’01 – 5h’0f
5h’10 –5h’1f
voltage
1 V
0.042 - 1 V, 0.042 V steps
Active clamp to
SW_AVS (default)
0V
-0.021 – -0.315V, -0.021
V steps
-0.315 V