AT73C237 Atmel, AT73C237 Datasheet - Page 31

• Manufacturer Part Number: AT73C237
• Description: IC POWER MANAGEMENT UNIT 16QFN
• Manufacturer: Atmel

Specifications of AT73C237

• Applications: Wireless
• Current - Supply: 250µA
• Voltage - Supply: 2.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table of Contents
6362A–PMAAC–01-Jul-08
1
2
3
4
5
6
7
8
9
Features ..................................................................................................... 1
Description ............................................................................................... 1
Block Diagram .......................................................................................... 2
Pin Description ......................................................................................... 3
Application Block Diagram ..................................................................... 4
Electrical Characteristics ........................................................................ 5
Startup Procedure .................................................................................... 7
Timing Diagram ........................................................................................ 9
Electrical Specification .......................................................................... 10
Functional Description .......................................................................... 19
5.1
5.2
5.3
6.1
6.2
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
8.9
8.10
8.11
9.1
9.2
9.3
9.4
9.5
Absolute Maximum Ratings ...............................................................................5
Recommended Operating Conditions ...............................................................5
Quiescent Current In Different Operating Modes ..............................................6
At VDD4 Rising ..................................................................................................7
At VDD3 Falling .................................................................................................7
LDO1 ...............................................................................................................10
LDO2 ...............................................................................................................12
LDO3 ...............................................................................................................14
LDO4 ...............................................................................................................16
High Performance Bandgap (HPBG) ...............................................................17
Low Power Bandgap (LPBG) ..........................................................................17
Voltage Monitor ...............................................................................................17
XRESIN ...........................................................................................................18
XRESO ............................................................................................................18
TWCK ..............................................................................................................18
TWD ................................................................................................................18
LDO1 ...............................................................................................................19
LDO2 ...............................................................................................................20
LDO3 ...............................................................................................................21
LDO4 ...............................................................................................................22
High Performance Bandgap (HPBG) ...............................................................22
AT73C237
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