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LM337T 数据表(PDF) 4 Page - ON Semiconductor

部件名 LM337T
功能描述  THREE-TERMINAL ADJUSTABLE NEGATIVE VOLTAGE REGULATOR
Download  8 Pages
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

LM337T 数据表(HTML) 4 Page - ON Semiconductor

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LM337
4
MOTOROLA ANALOG IC DEVICE DATA
Figure 2. Load Regulation and
∆IAdj/Load Test Circuit
Figure 3. Standard Test Circuit
Figure 4. Ripple Rejection Test Circuit
VO (min Load) – VO (max Load)
Cin
1.0
µF
R2
1%
R1
120
CO +
RL
(max
Load)
Adjust
Vin
–VI
LM337
Vout
* Pulse testing required.
1% Duty Cycle is suggested.
Load Regulation (mV) = VO (min Load) – VO (max Load)
Load Regulation (% VO) =
x 100
IL
IAdj
1.0
µF
–VO (min Load)
–VO (max Load)
VO
RL
+
1.0
µF
CO
R1
120
1%
R2
Cin
Adjust
Vin
LM337
To Calculate R2:
R2 =
– 1
R1
This assumes IAdj is negligible.
* Pulse testing required.
* 1% Duty Cycle is suggested.
VI
IAdj
Vref
IL
VO
1.0
µF
Vout
RL
+
1.0
µF
CO
1N4002
D1*
Cin
1%
R2
Adjust
Vin
LM337
R1
120
14.3 V
4.3 V
f = 120 Hz
CAdj
+
Vout = –1.25 V
* D1 Discharges CAdj if output is shorted to Ground.
1.0
µF
10
µF
Vout
VO
*
VO (min Load)
Vref
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.


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