LM34910EVAL National Semiconductor, LM34910EVAL Datasheet - Page 4

• Manufacturer Part Number: LM34910EVAL
• Description: BOARD EVALUATION LM34910
• Manufacturer: National Semiconductor

Specifications of LM34910EVAL

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 5V
• Current - Output: 1A
• Voltage - Input: 8 ~ 36V
• Regulator Topology: Buck
• Frequency - Switching: 850kHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM34910
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Power - Output: -

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Start-Up Regulator, V
Switch Characteristics
Softstart Pin
Current Limit
On Timer
Off Timer
Regulation and Over-Voltage Comparators (FB Pin)
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
type apply over full Operating Junction Temperature range. V
UVLO
V
BST to GND
SW to GND (Steady State)
ESD Rating (Note 2)
BST to V
V
BST to SW
UVLO
Symbol
V
Rds(on)
t
t
IN
IN
ON
ON
CC
V
Human Body Model
t
I
OFF
LIM
REF
to GND
to SW
Reg
- 1
- 2
VCC
GD
CC
V
V
V
V
V
threshold
UVLO
UVLO
I
I
Buck Switch Rds(on)
Gate Drive UVLO
UVLO
Pull-up voltage
Internal current source
Threshold
Resistance from I
Response time
On-time
On-time
Shutdown threshold
Threshold hysteresis
Minimum Off-time
FB regulation threshold
FB over-voltage threshold
FB bias current
IN
IN
CC
IN
CC
CC
CC
operating current
shutdown current
-V
regulated output
output impedance
current limit (Note 3)
under-voltage lockout
CC
VCC
VCC
GD
CC
dropout voltage
hysteresis
Parameter
hysteresis
filter delay
SEN
to S
GND
40V
50V
-1.5V
2kV
40V
40V
14V
Specifications with standard typeface are for T
I
V
0 mA ≤ I
V
V
V
100 mV overdrive
Non-switching, FB = 3V
R
I
V
Current out of I
V
V
Voltage at R
Voltage at R
SS pin = steady state
CC
TEST
(Note 1)
CC
CC
CC
CC
BST
IN
IN
ON
= 0 mA,
= 10V, R
= 36V, R
/SD = 0V
= V
= 0V
increasing
decreasing
- V
= 200 mA
CC
CC
SW
Conditions
Reg - 100 mV
≤ 5 mA
Increasing
ON
ON
ON
ON
/SD rising
/SD falling
SEN
= 200 kΩ
= 200 kΩ
4
IN
= 24V, R
Operating Ratings
V
S
Current out of I
SS to RTN
All Other Inputs to GND
Storage Temperature Range
JunctionTemperature
V
Junction Temperature
CC
GND
IN
to GND
to RTN
ON
= 200k unless otherwise stated (Note 5).
2.440
0.35
Min
6.6
3.0
2.1
1
SEN
J
= 25˚C, and those with boldface
2.875
0.63
0.45
11.5
1.25
2.75
0.65
Typ
140
150
440
130
150
740
280
100
1.4
5.8
4.3
2.5
2.5
80
40
7
9
3
(Note 1)
2.550
Max
0.95
250
7.4
5.5
1.5
3.6
1.1
1
14V
-0.3V to +0.3V
See Text
-0.3V to 4V
-0.3 to 7V
-55˚C to +150˚C
150˚C
−40˚C to + 125˚C
8.0V to 36V
Units
mΩ
mA
mV
mA
mV
mV
µA
µA
nA
µs
ns
µs
ns
ns
Ω
Ω
V
V
V
V
V
A
V
V
V