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参数资料
| 型号： | SP6137LEDEB |
| 厂商： | Exar Corporation |
| 文件页数： | 2/15页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR SP6137LED |
| 标准包装： | 1 |
| 系列： | * |
S P 6 1 3 7
W i d e I n p u t , 9 0 0 k H z S y n c h r o n o u s P W M S t e p D o w n
Controller
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of
the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect
reliability.
V cc .......................................................................... 7V
BST ...................................................................... 27V
GH, GL peak output current <10us..............................2A
Storage Temperature ..............................-65°C to 150°C
Power Dissipation.................................Internally Limited
ESD Rating BST Pin (HBM - Human Body Model)...... 1.5kV
ESD Rating All Other Pins (HBM) ............................... 2kV
Thermal Resistance θ JA ....................................41.9°C/W
Operating Voltage Range ..............................2.5V to 20V
BST-SWN ......................................................-0.3 to 7V
SWN ............................................................-1V to 20V
GH................................................... -0.3V to BST+0.3V
GH-SWN.................................................................. 7V
All other pins ..................................... -0.3V to V CC +0.3V
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Junction Temperature of T J = 25°C only; limits applying over the full
Operating Junction Temperature range are denoted by a “?”. Minimum and Maximum limits are guaranteed through test,
design, or statistical correlation. Typical values represent the most likely parametric norm at T J = 25°C, and are provided for
reference purposes only. Unless otherwise indicated, V cc = 4.5V to 5.5V, BST= V cc , SWN=GND=0V, UVIN=3V, CV cc = 10μF,
C COMP =0.1uF, CGH=CGL=3.3nF, C SS =50nF, T A = –40°C to 85°C (SP6137EU) or T A = –0°C to 70°C (SP6137CU)..
Parameter
V CC Supply Current
Min.
Typ.
1.5
Max.
3
Units
mA
Conditions
VFB =0.9V (No switching)
BST Supply Current
0.2
0.4
mA
?
VFB =0.9V (No switching)
V CC UVLO Start Threshold
V CC UVLO Hysteresis
UVIN Start Threshold
UVIN Hysteresis
UVIN Input Current
4.00
100
2.30
260
4.25
200
2.50
300
4.50
300
2.65
390
1
V
mV
V
mV
uA
?
?
UVIN=3.0V
Error Amplifier Reference
Error Amplifier Reference
Over Line and Temperature
0.792
0.788
0.800
0.800
0.808
0.812
V
V
?
2X Gain Config., Measure VFB, V CC =5V,
T=25°C
Error Amplifier
Transconductance
6
mS
Error Amplifier Gain
COMP Sink Current
COMP Source Current
60
150
150
dB
uA
uA
No Load
VFB=0.9V, COMP=0.9V
VFB=0.7V, COMP=2.2V
VFB Input Bias Current
50
200
nA
?
VFB=0.8V
Internal Pole
4
MHz
COMP Clamp
COMP Clamp Temp. Coefficient
2.5
-2
V
mV/°C
VFB=0.7V, TA = 25°C
Ramp Amplitude
RAMP Offset
0.92
1.10
1.1
1.28
V
V
?
TA = 25°C, RAMP COMP until GH starts
switching
RAMP Offset Temp. Coefficient
-2
mV/°C
GH Minimum Pulse Width
90
180
ns
?
Maximum Controllable Duty
Ratio
Maximum Duty Ratio
92
100
97
%
%
?
Maximum Duty Ratio Measured just
before pulse skipping begins
Valid for 20 Cycles
Internal Oscillator Frequency
760
900
1040
kHz
?
SS Charge Current:
? 2008 Exar Corporation
10
2/15
uA
Rev. 2.0.0
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