Rainbow-electronics MAX1874 Bedienungsanleitung PDF herunterladen (Seite 4)

MAX1874

Dual-Input, USB/AC Adapter, 1-Cell

Li+ Charger with OVP and Thermal Regulation

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

USB

= V

DCLV

= V

USEL

= 5V, V

BATT

= 4.2V, V

THRM

= V

REF

/ 2, Circuit of Figure 2, T

= 0°C to +85°C, unless otherwise

noted. Typical values are at T

= +25°C.)

PARAMETER CONDITIONS MIN TYP MAX UNITS

TIMING

DC Rising to DCOK Falling USB = open, DC rising to 5V 20 ms

USB Rising to UOK Falling DC = open, USB rising to 5V 20 ms

DC Falling to DCOK Going

Open-Drain Propagation Delay

USB = open, 1kΩ pullup 2 µs

USB Falling to UOK Going

Open-Drain Propagation Delay

DC = open, 10kΩ pullup 2 µs

DC Rising to PON Rising (90%)

USB = open, DC step to 5V, BATT = 3.6V,

100kΩ pulldown

20 ms

USB Rising to PON Rising (90%)

DC = open, V

USB

step to 5V, V

BATT

= 3.6V,

100kΩ pulldown

20 ms

DC Falling to PON Going

Open-Drain Propagation Delay

USB = open, 100kΩ pulldown 2 µs

USB Falling to PON Going

Open-Drain Propagation Delay

DC = open, 100kΩ pulldown 2 µs

ELECTRICAL CHARACTERISTICS

USB

= V

DCLV

= V

USEL

= 5V, V

BATT

= 4.2V, V

THRM

= V

REF

/ 2, Circuit of Figure 2, T

= -40°C to +85°C, unless otherwise

noted. Typical values are at T

= +25°C.) (Note 4)

PARAMETER CONDITIONS MIN TYP MAX UNITS

INPUT VOLTAGE RANGES AND INPUT CURRENT

Maximum DC Input Voltage with

Overvoltage Protection

Q2 input MOSFET must be in place; charging

occurs only below 6.2V, Figures 3, 4, and 5

18 V

Maximum DC Input Voltage Without

Overvoltage Protection

DC = DCLV, Q2 input MOSFET not on circuit,

Figure 3

6.5 V

Maximum Input Voltage for Charging 6.0 6.5 V

= 0V 4

DC Supply Current

= 5V 6

DCLV Operating Voltage Range 4.35 6.00 V

DCLV Shutdown Supply Current V

= 0V 500 µA

USB Input Voltage Range 4.35 6.50 V

= 0V 750 µA

= 5V, V

= 0V 3 mA

USB Supply Current

= 5V, V

= 5V 300 µA

DCI Input Current 100 nA

THRM Input Bias Current 100 nA

1 2 3 4 5 6 7 8 9 ... 15 16

Kommentare zu diesen Handbüchern

Keine Kommentare

Rainbow-electronics MAX1874 Bedienungsanleitung Seite 4

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Sensoren Rainbow-electronics MAX1874