![](http://datasheet.mmic.net.cn/Micrel-Inc/MIC2555-1BML-TR_datasheet_98998/MIC2555-1BML-TR_5.png)
Micrel, Inc.
MIC2555
December 2006
5
M9999-121406
Absolute Maximum Ratings
(1)
Power Supply Voltage:
VBAT, GPIO- ................................................. -0.3V to +6.0V
VDD_LGC ......................................... –0.3V to +6.0V and ≤ VBAT
USB Bus Voltage
VBUS ......................................................................–0.3V to +6.0V
VDD_LGC .........................................–0.3V to +6.0V and ≤ VBUS
Voltage On Any Other Pin............................ –0.3V to +4.5V
Current Into/Out of Any Pin .......................................
±10mA
Junction Temperature ................................................ 150°C
Storage Temperature .................................–65°C to +150°C
ESD Ratings:..............................................VBUS, D+, D–, ID
Human Body Model .............................................. 15 kV
ESD Ratings:................................................... All other pins
Human Body Model ................................................ 2 kV
Operating Ratings
(2)
Power Supply Voltage:
VBUS.......................................................... 4.4V to 5.25V
VBAT............................................................ 3.0V to 4.5V
Operating Temperature................................ –40°C to +85°C
Package Thermal Resistance .................................. 49°C/W
Electrical Characteristics
(3)
Test condition is 25°C unless otherwise specified. Bold indicates -40°C + 85°C,
VBAT = 3.6V, VDD_LGC = 3.6V, VBUS = 5.0V, VTRM = 1F, C+ = 0.22F, C++ = 220F, CVBUS = 10F
Symbol
Parameter
Condition
Min
Typ
Max
Units
Power Supplies
VBAT
System Supply Voltage
3.0
4.5
V
VDD_LGC
Logic Supply Voltage
1.6
VBAT
V
VTRM
Termination Voltage (internal
supply voltage)
ITRM ≤ 2.5mA, 3.0 < VBAT < 3.6V
2.8
3.3
3.6
V
IBAT_PD
System Supply Current
Power Down mode
13
20
A
IBAT_SUS
System Supply Current
Suspend mode
140
250
A
IBAT_FS_I
System Supply Current
Full Speed, Idle, D+ ≥ 2.8V, D- ≤ 0.3V, IVBUS
= 0mA
2.8
5.0
mA
IBAT_FS_HC
System Supply Current
Full Speed Transmitting 12Mb/s,
CLOAD ≤ 350pF on D+, D-, IVBUS = 0mA
17
40
mA
IBAT_FS_LC
System Supply Current
Full Speed Transmitting 12Mb/s,
CL = 50pF on D+,D-, IVBUS = 0mA
2.5
6
mA
IBAT_LS_HC
System Supply Current
Low Speed Transmitting 1.5Mb/s,
CL = 350pF on D+,D-, IVBUS = 0mA
6.5
12
mA
IVBUS_S
Current drawn by System
from VBUS
Suspend mode, OE_INT/ = 1
80
100
A
IVDD_LGC
Current drawn by System for
core logic
OE_INT/ = 1
7
15
A
Charge Pump and VBUS
VBUS_ OUT
Voltage Output to VBUS
IBUS = 10mA, VBAT = 3.0V
4.4
5.0
5.25
V
IVBUS
VBUS Output Current
4.4V ≤ VBUS ≤ 5.25V
10
27
mA
RVBUS_PU
B device SRP Pull-up
Resistor on VBUS
Pull-up voltage = VTRM
281
1300
7500
RVBUS_PD
B device SRP Pull-down
Resistor on VBUS
Pull-down to GND
675
2300
7500