SC2545 查看數據表（PDF） - Semtech Corporation
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SC2545 Datasheet PDF : 24 Pages
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SC2545
POWER MANAGEMENT
Absolute Maximum Ratings
Exceeding the specifications below may result in permanent damage to the device, or device malfunction.
Operation outside of the parameters specified in the Electrical Characteristics section is not implied.
Parameter
Symbol
BST1, BST2 to PGND
VIN to PGND
ILIM1, ILIM2 and EN to PGND
VCC and PVCC to PGND
PGND to AGND
BST1 to PH1, BST2 to PH2, DRVH1 to PH1, DRVH2 to PH2
DRVL1, DRVL2 to PGND
PHASE, DRVL to AGND pulse (100nS), peak voltage
All Other Pins to AGND
Storage Temperature Range
Junction Temperature
Lead Temperature (Soldering) 10 Sec for TSSOP-24
Lead Temperature (IR Reflow) for MLPQ-24
Thermal Resistance Junction to Case
TSSOP-24
MLP-24
Thermal Resistance Junction to Ambient
TSSOP-24
MLP-24
ESD Rating (Human Body Model)
Vbst
Vin
TSTG
TJ
TLEAD
θJC
θJA
ESD
Note: This device is ESD sensitive. Use of standard ESD handling precautions is required.
Electrical Characteristics
o
Unless specified: TA = 25 C, VIN=16V, Fs=200kHz .
Parameter
Test Conditions
Min
Undervoltage Lockout
Start Threshold
UVLO Hysteresis
Vcc rising
Vcc falling
Power Supply
Operating Current (I IN-IPVCC)
Vcc Regulated
Vcc Load Regulation Level
Vcc Line Regulation
PVcc Operating Current
SS1/SS2/EN =High, FS=200kHz
VIN > 12V
I_load=0~20mA
Vin=12~24V
200KHz, 1nF on HG, 1nF on LG
Disable Quiescent Current
Main Switcher output
EN=low
Line Regulation
Load Regulation
5V<Vin <28V
0A<load current <10A
Output Voltage Accuracy
2005 Semtech Corp.
Without feedback attenuation ,
TA = -40 oC to +85 oC
2
0.735
Maximum
38
28
VIN
14
+/- 0.3
-0.3 to 14
-0.3 to VCC
-3
-0.3 to VCC
-60 to +150
-40 to +150
260
23
2
78
25
TBD
Units
V
V
V
V
V
V
V
V
V
oC
oC
oC
o C/W
o C/W
kV
Typ
Max
Unit
4.5
V
200
mV
6.0
10
mA
10
V
2
%
2
%
14
mA
0.1
10
uA
0.5
0.5
0.750
%
%
0.765
V
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