Quarter-Brick Dual Series
| 40A DC/DC
7
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Protection and Control Features
LQD40A48-3V3-1V2 Model
Efficiency
LQD40A48-3V3-1V2 Model
Characteristic
Symbol
Min
Typ
Max
Units
Notes and Conditions
Efficiency
η
91.0
%
Iout 3.3V = 50% Iout (max),
Iout 1.2V = 100% Iout (max),
Vin = Vin (nom)
Efficiency
η
90.5
%
Iout 3.3V = 100% Iout (max),
Iout 1.2V = 50% Iout (max),
Vin = Vin (nom)
Efficiency
η
88.0
90.0
%
Iout 3.3V = 100% Iout (max),
Iout 1.2V = 100% Iout (max),
Vin = Vin (nom)
Characteristic
Symbol
Min
Typ
Max
Units
Notes and Conditions
Overvoltage trip voltage
Vov 1.2V
1.32
1.56
V DC
Non-latching. See Application
Vov 3.3V
3.63
4.29
V DC
Note 137 for details
Overcurrent limit inception
Ioc
21
23
25
A DC
Vo = 90% of Vo (nom)
Output voltage trim range
110
%
Trim up (% of Vo nom)
Limit O/P to 90W
90
%
Trim down (% of Vo nom)
See Application Note 137 for
details of trim equations and
trim curves
High Efficiency, High Current, Low Profile DC/DC Converters
File Name: lf_quarter_brick_d_perform.pdf Rev: 13 Oct 2004
