LM2597HVM-12 National Semiconductor, LM2597HVM-12 Datasheet - Page 4

• Manufacturer Part Number: LM2597HVM-12
• Description: SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator/ with Features
• Manufacturer: National Semiconductor

www.national.com
Symbol
DEVICE PARAMETERS
I
SHUTDOWN/SOFT-START CONTROL Test Circuit of Figure 12
V
V
I
I
FLAG/DELAY CONTROL Test Circuit of Figure 12
VF
IF
BIAS SUPPLY
I
I
STBY
SD
SS
BS
Q
All Output Voltage Versions
Electrical Characteristics
JA
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-
tended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: Voltage internally clamped. If clamp voltage is exceeded, limit current to a maximum of 1 mA.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5k resistor into each pin.
Note 4: Typical numbers are at 25˚C and represent the most likely norm.
Note 5: All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% produc-
tion tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate
Average Outgoing Quality Level (AOQL).
Specifications with standard type face are for T
ture Range. Unless otherwise specified, V
sion. I
SD
SS
L
SAT
LOAD
Standby Quiescent
Current
Thermal Resistance
Shutdown Threshold
Voltage
Soft-start Voltage
Shutdown Current
Soft-start Current
Regulator Dropout
Detector
Threshold Voltage
Flag Output Saturation
Voltage
Flag Output Leakage
Current
Delay Pin Threshold
Voltage
Delay Pin Source
Current
Delay Pin Saturation
Bias Supply Pin Current
Operating Quiescent
Current
= 100 mA.
Parameter
SD /SS pin = 0V
N Package, Junction to Ambient (Note 12)
M Package, Junction to Ambient (Note 12)
Low, (Shutdown Mode)
High, (Soft-start Mode)
V
V
V
V
Low (Flag ON)
I
V
V
Low (Flag ON)
High (Flag OFF) and V
V
Low (Flag ON)
V
V
V
SINK
OUT
OUT
SHUTDOWN
Soft-start
DELAY
FLAG
DELAY
BS
BS
BS
IN
(Continued)
= 2V
= 4.4V (Note 10)
= 4.4V , V
= 3 mA
= 12V for the 3.3V, 5V, and Adjustable version and V
= 20% of Nominal Output Voltage
= 100% of Nominal Output Voltage
= 40V
J
= 0.5V
= 0.5V
= 25˚C, and those with boldface type apply over full Operating Tempera-
= 2.5V
= 0.5V
in
(Note 10)
Conditions
pin current(Note 10)
LM2597HV
OUT
4
(Note 10)LM2597
Regulated
LM2597/LM2597HV-XX
(Note 4)
1.25
Typ
140
150
120
1.3
1.6
0.3
0.3
85
95
96
55
2
3
5
3
4
1
IN
= 24V for the 12V ver-
(Note 5)
200/250
250/300
350/400
0.7/1.0
Limit
1.21
1.29
400
0.6
10
92
98
10
2
5
6
2
mV(max)
mA(max)
µA(max)
µA(max)
µA(max)
µA(max)
µA(max)
µA(max)
(Limits)
%(max)
V(max)
%(min)
V(max)
V(max)
V(min)
V(min)
Units
˚C/W
mV
mA
mA
µA
µA
µA
µA
µA
µA
%
V
V
V
V