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参数资料
| 型号： | XRP7665EVB |
| 厂商： | Exar Corporation |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL STEP-DOWN XRP7665 |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 0.925 V ~ 16 V |
| 电流 - 输出： | 3A |
| 输入电压： | 4.75 V ~ 18 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 340kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | XRP7665 |
| 其它名称： | 1016-1754 |
X R P 7 6 6 5
3 A 1 8 V S y n c h r o n o u s S t e p - D o w n C o n v e r t e r
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
OPERATING RATINGS
Input Voltage V IN ....................................... 4.50V to 18V
Ambient Operating Temperature ................ -40°C to 85°C
Maximum Output Current.................................... 3A min
Thermal Resistance θ JA ...................................... 60°C/W
reliability.
Supply Voltage V IN ...................................... -0.3V to 20V
Switch Node Voltage V SW ......................................... 21V
Boost Voltage V BS ................................... -0.3 to V SW +6V
Enable Voltage V EN ......................................... -0.3 to V IN
All Other Pins .............................................. -0.3 to +6V
Junction Temperature .......................................... 150°C
Storage Temperature .............................. -65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................... 260°C
ESD Rating (HBM - Human Body Model) .................... 2kV
ESD Rating (MM - Machine Model) ...........................200V
Moisture Sensitivity Level (MSL) ................................... 3
ELECTRICAL SPECIFICATIONS
Specifications are for an Operating Ambient Temperature of T A = 25°C only; limits applying over the full Ambient Operating
T emperature range are denoted by a “?”. Minimum and Maximum limits are guarantee d through test, design, or statistical
correlation. Typical values represent the most likely parametric norm at T A = 25°C, and are provided for reference purposes
only. Unless otherwise indicated, V IN = V EN = 12V, V OUT =3.3V.
Parameter
Shutdown Supply Current
Quiescent Current
Feedback Voltage V FB
Min.
0.907
Typ.
0.1
1.2
0.925
Max.
10
1.4
0.943
Units
μA
mA
V
Conditions
V EN ≤ 0.75V
V EN =3V, V FB =1V
Feedback Overvoltage Threshold
1.1
V
Feedback Bias Current
Error Amplifier Voltage Gain A EA
(Note 1)
Error Amplifier
Transconductance G EA
High-Side switch On Resistance
R DSONH (Note 2)
Low-Side switch On Resistance
R DSONL (Note 2)
-0.1
400
800
100
100
0.1
μA
V/V
μA/V
m?
m?
V FB =1V
I SW =0.2A&0.7A
I SW =-0.2A&-0.7A
High-Side switch Leakage
Current
High-Side Switch Current Limit
Low-Side Switch Current Limit
COMP to Current Sense
Transconductance G CS
4.3
0.1
5.6
1.4
5.2
10
μA
A
A
A/V
V IN =18V, V EN =0V, V SW =0V
From Drain to Source
Oscillator Frequency F OSC1
Short Circuit Oscillator
Frequency F OSC2
280
340
90
400
kHz
kHz
Maximum Duty Cycle D MAX
Minimum Duty Cycle D MIN
90
0
%
%
V FB =0.85V
V FB =1V
EN Enable Threshold Voltage
EN Enable Threshold Voltage
Hysteresis (Note 1)
2.2
2.5
210
2.7
V
mV
UVLO Threshold
3.65
4.00
4.25
V
V IN Rising
? 2013 Exar Corporation
2/12
Rev. 2.0.1
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