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Linear Technology LTM8052A Demo Board, 36Vin, 5A 2-Quadrant CVCC Step-Down µModule regulator w/o OVP DC1939A DC1939A Data Sheet

Product codes
DC1939A
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LTM8052/LTM8052A
3
8052fc
For more information 
elecTrical characTerisTics
 
The 
l
 denotes the specifications which apply over the full internal 
operating temperature range, otherwise specifications are at T
A
 = 25°C. RUN = 3V, unless otherwise noted. (Note 3)
Note 1: Stresses beyond those listed under Absolute Maximum Ratings 
may cause permanent damage to the device. Exposure to any Absolute 
Maximum Rating condition for extended periods may affect device 
reliability and lifetime.
Note 2: This µModule regulator includes overtemperature protection that 
is intended to protect the device during momentary overload conditions. 
Internal temperature will exceed 125°C when overtemperature protection 
is active. Continuous operation above the specified maximum internal 
operating junction temperature may impair device reliability.
Note 3: The LTM8052E/LTM8052AE is guaranteed to meet performance 
specifications from 0°C to 125°C internal operating temperature. 
Specifications over the full –40°C to 125°C internal operating temperature 
range are assured by design, characterization and correlation with 
statistical process controls. The LTM8052I/LTM8052AI is guaranteed 
to meet specifications over the full –40°C to 125°C internal operating 
temperature range. The LTM8052MP/LTM8052AMP is guaranteed to meet 
specifications over the full –55°C to 125°C internal operating temperature 
range. Note that the maximum internal temperature is determined by 
specific operating conditions in conjunction with board layout, the rated 
package thermal resistance and other environmental factors.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Minimum Input Voltage
l
6
V
Output DC Voltage
I
OUT
 = 1A, R
ADJ
 Open 
I
OUT
 = 1A, R
ADJ
 = 499Ω
1.2 
24
V 
V
Output DC Current
CTL_T, CTL_I = 1.5V
–6
5
A
Quiescent Current Into V
IN
V
IN
 = 12V, RUN = 0V 
V
IN
 = 12V, No Load
0.1 
17
3 
30
µA 
mA
Line Regulation
6V < V
IN
 < 36V, I
OUT
 = 1A
0.1
%
Load Regulation
V
IN
 = 12V, 0A < I
OUT
 < 5A
0.7
%
Output RMS Voltage Ripple
V
IN
 = 12V, I
OUT
 = 4.5A
10
mV
Switching Frequency
R
T
 = 40.2k 
R
T 
= 453k
1000 
100
kHz 
kHz
Voltage at ADJ Pin
 
l
1.16
1.19
1.22
V
Current Out of ADJ Pin
ADJ = 0V, V
OUT
 = 1V
100
µA
RUN Pin Current
RUN = 1.45V
5.5
µA
RUN Threshold Voltage (Falling)
 
1.49
1.55
1.61
V
RUN Input Hysteresis
160
mV
CTL_I Control Range
0
1.5
V
CTL_I Pin Current
1.5
µA
CTL_I Positive Current Limit
CTL_I = 1.5V 
CTL_I = 0.75V
5.1 
2.24
5.6 
2.8
6.1 
3.36
A 
A
CTL_I Negative Current Limit
CTL_I = 1.5V 
CTL_I = 0.75V
–8.5 
–5.7
–7.7 
–5.1
–6.9 
–4.5
A 
A
CTL_T Control Range
0
1.5
V
CTL_T Pin Current
1.5
µA
CTL_T Positive Current Limit
CTL_T = 1.5V 
CTL_T = 0.75V
5.1 
2.24
5.6 
2.8
6.1 
3.36
A 
A
CTL_T Negative Current Limit
CTL_T = 1.5V 
CTL_T = 0.75V
–8.5 
–5.5
–7.7 
–4.9
–6.9 
–4.3
A 
A
V
REF
 Voltage
0.5mA Load
1.93
2
2.04
V
SS Pin Current
 
11
µA
SYNC Input Low Threshold
f
SYNC
 = 400kHz
0.6
V
SYNC Input High Threshold
f
SYNC
 = 400kHz
1.2
V
SYNC Bias Current
SYNC = 0V
1
µA