MIC2587(2013) 데이터 시트보기 (PDF) - Micrel
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MIC2587 Datasheet PDF : 22 Pages
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Micrel, Inc.
MIC2587/MIC2587R
Absolute Maximum Ratings(1)
(All voltages are referred to GND)
Supply Voltage (VCC) pin ............................. −0.3V to +100V
GATE pin..................................................... −0.3V to +100V
ON, SENSE pins ......................................... −0.3V to +100V
PWRGD, /PWRGD pins .............................. −0.3V to +100V
FB pin .......................................................... −0.3V to +100V
TIMER pin ....................................................... −0.3V to +6V
Junction Temperature (TJ) ....................................... +125°C
Lead Temperature (Soldering, 10s) ......................... +260°C
Storage Temperature .........................–65°C ≤ TA ≤ +150°C
ESD Rating(3)
Human Body Model ................................................. 2kV
Machine Model .............................................................200V
Operating Ratings(2)
Supply Voltage (VCC)...................................... +10V to +80V
ON, PWRGD, /PWRGD ........................................ 0V to VCC
FB ...................................................................... 0V to VOUT
GATE .................................................. 0V to (VCC + ∆VGATE)
Ambient Temperature Range (TA) .............. −40°C to +85°C
Package Thermal Resistance (θJA)
8-pin SOIC ....................................................+160 °C/W
DC Electrical Characteristics(4)
VCC = +24V and +48V, TA = +25°C, unless otherwise noted. Bold indicates specifications apply over the full operating temperature
range of TA = −40°C to +85°C.
Symbol Parameter
Condition
Min. Typ. Max. Units
VCC
Supply Voltage
10
80
V
ICC
VUVH
VUVL
Supply Current
Supply Voltage Undervoltage Lockout
VON = VFB = 1.5V
VCC rising
VCC falling
2
5
mA
7.5
8.0
8.5
V
7.0
7.5
8.0
VHYSLO
VCC Undervoltage Lockout Hysteresis
500
mV
VFBH
Feedback Pin Voltage High Threshold FB Low-to-High transition
1.280 1.313 1.345 V
VFBL
Feedback Pin Voltage Low Threshold FB High-to-Low transition
1.208 1.233 1.258 V
VHYSFB
Feedback Voltage Hysteresis
80
mV
∆VFB
FB Pin Threshold Line Regulation
10V ≤ VCC ≤ 80V
−0.05
0.05 mV/V
IFB
FB Pin Input Current
0V ≤ VFB ≤ 3V
−1
1
µA
VTRIP
Circuit Breaker Trip Voltage,
VCC - VSENSE(5)
VFB = 0V (see Figure 1)
VFB = 1V (see Figure 1)
5
12
17
mV
39
47
55
∆VGATE
MOSFET Gate Drive, VGATE - VCC
+10V ≤ VCC ≤ +80V
7.5
18
V
IGATEON
GATE Pin Pull-Up Current
Start cycle, VGATE = 7V
−10
−16
-22
µA
IGATEFLT
GATE Pin rapid pull-down current
during a fault condition, until
VGATE = VGATE[TH]
(VGATE[TH] is the MOSFET threshold)
(VCC − VSENSE) = (VTRIP + 10mV)
VGATE = 5V
30
80
200 mA
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
4. Specification for packaged product only.
5. Circuit breaker trip threshold is verified by monitoring the TIMER pin as it switches from discharging to charging (current), and by the GATE output
voltage going low.
January 24, 2013
6
Revision 2.0
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