參數(shù)資料
型號： MIC2591B-5YTQ
廠商： MICREL INC
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP48
封裝： LEAD FREE, TQFP-48
文件頁數(shù)： 32/34頁
文件大小： 1920K
代理商： MIC2591B-5YTQ
March 2005
7
M9999-033105
MIC2591B
Micrel
Absolute Maximum Ratings(1)
Supply Voltages
12VIN[A/B] ............................................................... 14V
3VIN[A/B], VSTBY[A/B] ............................................... 7V
Any Logic Pin......................... –0.5V (min) to 3.6V (max)
Output Current (/FAULT[A/B], /INT, SDA)................... 10mA
Power Dissipation..................................... Internally Limited
Lead Temperature (Soldering)
Standard Package (-xBTQ)
(IR Reow, Peak Temperature)........ 240°C +0°C/–5°C
Pb-Free Package (-xYTQ)
(IR Reow, Peak Temperature)........ 260°C +0°C/–5°C
Storage Temperature................................ –65°C to +150°C
ESD Rating(3)
Human Body Model ................................................... 2kV
Machine Model ........................................................ 200V
Operating Ratings(2)
Supply Voltages
12VIN[A/B]................................................11.0V to 13.0V
3VIN[A/B]......................................................3.0V to 3.6V
VSTBY[A/B] ..................................................3.0V to 3.6V
Ambient Temperature (TA
Ambient Temperature (T
Ambient Temperature (T )............................. 0°C to + 70°C
Junction Temperature (TJ)......................................... 125°C
Package Thermal Resistance
TQFP (θJA) ....................................................... 56.5°C/W
Electrical Characteristics(4)
12VIN[A/B] = 12V, 3VIN[A/B] = 3.3V, VSTBY[A/B] = 3.3V, TA
= 3.3V, T
= 3.3V, T = 25°C, unless otherwise noted.
A
Bold indicates specication applies over the
full operating temperature range from 0°C to +70°C.
Symbol
Parameter
Condition
Min
Typ
Max
Units
Power Control and Logic Sections
ICC12
Supply Current
2.5
5
mA
ICC3.3
0.5
1
mA
ICCSTBY
2.5
CCSTBY
5
mA
Undervoltage Lockout Thresholds
VUVLO(12V)
12VIN[A/B]
12VIN[A/B] increasing
8
9
10
V
VUVLO(3V)
3VIN[A/B]
3V
UVLO(12V)
IN[A/B] increasing
2.2
2.5
2.75
V
VUVLO(STBY) VSTBY[A/B]
VSTBY[A/B] increasing
2.8
2.9
3.0
V
VHYSUV
Undervoltage Lockout Hysteresis
180
mV
12VIN, 3VIN
VHYSSTBY
Undervoltage Lockout Hysteresis
50
mV
HYSSTBY
VSTBY[A/B]
Power-Good Undervoltage Thresholds
VUVTH(12V)
12VOUT[A/B]
12VOUT[A/B] decreasing
10.2
10.5
10.8
V
VUVTH(3V)
3VOUT[A/B]
3V
UVTH(12V)
OUT[A/B] decreasing
2.7
2.8
2.9
V
VUVTH(VAUX) VAUX[A/B]
VAUX[A/B]
VAUX[A/B]
V
VAUX[A/B]
V
decreasing
2.7
2.8
2.9
V
VHYSPG
Power-Good Detect Hysteresis
30
mV
VGATE(12V)
12VGATE Voltage
0
1.5
V
IGATE(12VSINK) 12VGATE Sink Current
Start Cycle
15
25
35
A
IGATE(12VPULLUP) 12VGATE Pull-up Current (Fault Off) Any fault condition
–20
mA
(V
GATE(12VPULLUP)
DD –VGATE) = 2.5V
VGATE(3V)
3VGATE Voltage
12VIN–1.5
12VIN
V
IGATE(3VCHARGE) 3VGATE Charge Current
Start Cycle
15
25
35
A
IGATE(3VSINK) 3VGATE Sink Current (Fault Off)
Any fault condition
40
mA
VGATE = 2.5V
CFILTER[A/B] Overcurrent Delay Time, Pin 20 (RFILTER[A&B]) Floating or NC
VFILTER
CFILTER[A/B] Threshold Voltage
1.20
1.25
1.30
V
IFILTER
CFILTER[A/B] Charging Current
V12VIN – V12VSENSE > VTHILIMIT
Delay ms
C
F V
(V)
I
A
FILTER
103
and/or
1.80
2.5
5.0
A
Notes:
1.
Exceeding measurements given within the “Absolute Maximum Ratings” section may damage the device.
2.
The device is not guaranteed to function outside of the measurements given in the “Operating Ratings" section.
3.
Devices are ESD sensitive. Employ proper handling precautions. The human body model is 1.5kΩ in series with 100pF.
4.
Specication for packaged product only.
Symbol
Parameter
Condition
Min
Typ
Max
Units
Symbol
Parameter
Condition
Min
Typ
Max
Units
Symbol
Parameter
Condition
Min
Typ
Max
Units
Symbol
Parameter
Condition
Min
Typ
Max
Units
Symbol
Parameter
Condition
Min
Typ
Max
Units
Symbol
Parameter
Condition
Min
Typ
Max
Units
CFILTER[A/B] Threshold Voltage
1.25
2.5
A
CFILTER[A/B] Threshold Voltage
Charging Current
V
Supply Current
2.5
0.5
2.5
Undervoltage Lockout Thresholds
12VIN[A/B]
12V
3VIN[A/B]
3V
Undervoltage Lockout Hysteresis
180
mV
12V
Undervoltage Lockout Hysteresis
50
mV
V
12VOUT[A/B]
12V
3VOUT[A/B]
3V
Power-Good Detect Hysteresis
30
mV
12VGATE Voltage
12VGATE
12VGATE Pull-up Current (Fault Off) Any fault condition
(V
3VGATE Voltage
3VGATE Charge Current
Start Cycle
3VGATE Sink Current (Fault Off)
Any fault condition
V
Supply Current
2.5
0.5
2.5
Undervoltage Lockout Thresholds
12VIN[A/B]
12V
3VIN[A/B]
3V
VSTBY[A/B]
V
Undervoltage Lockout Hysteresis
180
mV
Undervoltage Lockout Hysteresis
50
mV
12VOUT[A/B]
12V
3VOUT[A/B]
3V
VAUX[A/B]
V
Power-Good Detect Hysteresis
30
mV
12VGATE Voltage
Sink Current
Start Cycle
12VGATE Pull-up Current (Fault Off) Any fault condition
(V
3VGATE Voltage
3VGATE Charge Current
Start Cycle
3VGATE Sink Current (Fault Off)
Any fault condition
V
Supply Current
2.5
0.5
2.5
Undervoltage Lockout Thresholds
Undervoltage Lockout Hysteresis
180
mV
Undervoltage Lockout Hysteresis
50
mV
Power-Good Detect Hysteresis
30
mV
Supply Current
2.5
0.5
2.5
Undervoltage Lockout Thresholds
9
2.5
2.9
Undervoltage Lockout Hysteresis
180
mV
Undervoltage Lockout Hysteresis
50
mV
10.5
2.8
Power-Good Detect Hysteresis
30
mV
25
mA
25
mA
Undervoltage Lockout Thresholds
Undervoltage Lockout Hysteresis
180
mV
Undervoltage Lockout Hysteresis
50
mV
Power-Good Detect Hysteresis
30
mV
mA
V
Undervoltage Lockout Hysteresis
180
mV
Undervoltage Lockout Hysteresis
50
mV
V
Power-Good Detect Hysteresis
30
mV
V
A
mA
V
A
mA
V3VIN – V3VSENSE > VTHILIMIT
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