Atmel AT85DVK-07 Spezifikationen PDF herunterladen (Seite 243)

AT85C51SND3Bx

7632A–MP3–03/06

Parameters Table 259. DC-DC Filter Characteristics

= -40 to +85°C

Table 260. DC-DC Power Characteristics

BAT

= 0.9 to 3.6 V; T

= -40 to +85°C

Regulators

Schematic Figure 136. Regulator Connection

Note: Depending on power supply scheme, C

may replace C

DC1

capacitor (see Figure 135).

Parameters Table 261. Regulator Filter Characteristics

= -40 to +85°C

Table 262. High Voltage Regulator Power Characteristics

= 4.4 to 5.5 V; T

= -40 to +85°C

Symbol Parameter Min Typ Max Unit

DC-DC Inductance 10 µH

DC1

Low ESR Decoupling Capacitor 20 µF

DC2

Low ESR Decoupling Capacitor 100 nF

Symbol Parameter Min Typ Max Unit Test Conditions

BAT

DC-DC Input Voltage 0.9 3.6 V I

= 40 mA

DC-DC Output Voltage 1.6 1.75 1.9 V I

= 40 mA

DC-DC Output Current 40 mA V

BAT

= 1.0 V

MAX

Maximum Efficiency 92 % V

BAT

= 1.5 V

SWITCH

Switching Frequency 0.5 1.5 3 MHz

DCP

DCPWR Input Pull-Up Resistor 30 KΩ

HVDD

VSS

RLVDD

(

)

VSS

Symbol Parameter Min Typ Max Unit

Decoupling Capacitor 10 µF

Decoupling Capacitor 20 µF

Symbol Parameter Min Typ Max Unit Test Conditions

High Voltage Regulator Output Voltage 3.1 3.3 3.5 V I

= 50 mA

High Voltage Regulator Output Current 50 mA

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