DS1227 Datasheet, PDF (18/20 Pages) Dallas Semiconductor – KickStarter Chip

DS1227
ABSOLUTE MAXIMUM RATINGS*
Input Voltage on any Pin Relative to Ground
V_DCI Peak Input Current
Power Dissipation
Plastic DIP (derate 7.41 mW/^oC above +50^oC)
Small Outline (derate 12.5 mW/^oC above +50^oC)
Operating Temperature
Storage Temperature
Lead Soldering Temperature
-0.3 to 7.0V
450 mA
- 555 mW
- 937 mW
–40°C to +85°C
-55°C to +125°C
260°C for 10 seconds
* This is a stress rating only and functional operation of the device at these or any other conditions above those
indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods of time may affect reliability.
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
Startup Voltage
V_DCO Voltage Threshold for
V_CCO Turn-ON
V_DCO Voltage Threshold for
V_CCO Turn-OFF
Operating Supply Current
(BOOST=0)
(BOOST=1)
V_DCISU
V_DCON
V_DCOFF
I_CC
Standby Supply
V_CCO1 DC Source Current
(V_CCO1 = V_DCO -0.25V)
V_CCO2, V_CCO4
DC Source Current
(V_CCO2, V_CCO4 = V_DCO - 0.25V)
V_CCO3 Source
Current (V_CCO3 = V_DCO - 0.25V)
V_CCO1, V_CCO2, V_CCO3, V_CCO4
Voltage
I_SB
I_CCO1
I_CCO2
I_CCO4
I_CCO3
V_OUTB
V_CCO1, V_CCO2, V_CCO3, V_CCO4
Voltage
V_OUTP
V_CCO4 Voltage
V_OUT4
V_CCO1 ON Resistance
V_CCO2, V_CCO4 ON Resistance
V_CCO3 ON Resistance
Efficiency
R_VCCO1
R_VCCO2,4
R_VCCO3
MIN
1.8
4.20
4.75
V_DCO
-0.25
V_DCO
-0.25
TYP
4.30
1.5
0.5
5.00
80
MAX
4.62
(t_A = –40°C to +85°C)
UNITS NOTES
V
1
V
4.00
V
3.0
mA
4
1.0
mA
2
200
nA
100
mA
2, 7
50
mA
2, 7
10
mA
2, 7
5.25
V
1, 4
V
2
V
2.5
Ohms
5.0
Ohms
25
Ohms
%
1, 8
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