Operating Temperature Range ..........................-40ºC to +125ºC
Junction Temperature ...................................................... +150ºC
Storage Temperature Range .............................-65ºC to +150°C
Lead Temperature (soldering, 10s) ................................. +300°C
Soldering Temperature (reflow) .......................................+260°C
Package Thermal Characteristics
(Note 1)
TDFN (Multilayer)
Junction-to-Ambient Thermal Resistance (θ
JA
) ..........60°C/W
Junction-to-Case Thermal Resistance (θ
JC
) ...............11°C/W
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(V
DD
= +3.0V to 5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values at V
DD
= +5.0V and T
A
= +25ºC.) (Note 2)
PARAMETER
DC CHARACTERISTICS
Supply Voltage Range
Supply Current
Disable Supply Current
Driver Output Resistance
Undervoltage Lockout
Threshold
Undervoltage Lockout
Threshold Hysteresis
T1, T2 Leakage Current
LOGIC SIGNALS (EN, HICLK)
Input Logic-High Voltage
Input Logic-Low Voltage
Input Leakage Current
V
IH
V
IL
I
IL
EN,
HICLK = 0V or 5.5V
-1
2
0.8
+1
V
V
µA
V
DD
I
DD
I
DIS
R
O
V
UVLO
V
UVLO_HYST
I
LKG
V
EN
= V
DD
, T1, T2 = 0V or V
DD
-1
V
EN
= 0V, T1 and T2 not
connected
V
HICLK
= 0V
V
HICLK
= V
DD
3.0
1.1
2.1
5.5
1.8
3.5
5
160
145
2.6
2.75
250
+1
350
300
2.9
V
mA
µA
mΩ
V
mV
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
EN
= V
DD
, T1, T2, HICLK connected to GND
or V
DD
(Note 3)
I
OUT
= 500mA
V
DD
rising
V
DD
= 3.0V
V
DD
= 4.5V
www.maximintegrated.com
Maxim Integrated
│
2
MAX258
500mA, Push-Pull Transformer Driver
for Isolated Power Supplies
Electrical Characteristics (continued)
(V
DD
= +3.0V to 5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values at V
DD
= +5.0V and T
A
= +25ºC.) (Note 2)
PARAMETER
AC CHARACTERISTICS
Switching Frequency
T1, T2 Duty Cycle
T1, T2 Slew Rate
Crossover Dead Time
PROTECTION
Thermal-Shutdown
Threshold
Thermal-Shutdown
Hysteresis
T
SHDN
T
SHDN_HYS
+160
30
ºC
ºC
f
SW
D
t
SLEW
t
DEAD
Figure 1
Figure 1
Figure 1
V
HICLK
= 0V
V
HICLK
= V
DD
237
564
250
600
50
200
50
263
636
kHz
%
V/µs
ns
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Note 2:
All units are 100% production tested at T
A
= +25ºC. Specifications over temperature are guaranteed by design.
Note 3:
Disable supply current includes output-switch-leakage currents.
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