max5951etjt Maxim Integrated Products, Inc., max5951etjt Datasheet - Page 2

• Manufacturer Part Number: max5951etjt
• Description: Max5951 12v/5v Input Buck Pwm Controller
• Manufacturer: Maxim Integrated Products, Inc.

ABSOLUTE MAXIMUM RATINGS
IN to AGND.............................................................-0.3V to +24V
BST to AGND..........................................................-0.3V to +30V
BST to LX..................................................................-0.3V to +6V
CS- to AGND ...............................................-0.3V to (V
REG, DREG, PUVLO, DCENI, SYNCIN, THRESH,
RT, ILIM, STARTUP, PGOOD, FB, CS+ to AGND ....-0.3V to +6V
SYNCOUT, COMP to AGND.....................-0.3V to (V
DL to PGND...............................................-0.3V to (V
DH to LX ....................................................-0.3V to (V
PGND to AGND .....................................................-0.3V to +0.3V
Input Current (any pin) .....................................................±50mA
ELECTRICAL CHARACTERISTICS
(V
-40°C to +85°C, unless otherwise noted. Typical values are at T
12V/5V Input Buck PWM Controller
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.
2
Input-Voltage Range
Standby Supply Current
Quiescent Supply Current
Switching Supply Current
PWM UVLO
Default PWM Undervoltage
Lockout Threshold
PWM Undervoltage Lockout
Hysteresis
PUVLO Threshold
PUVLO Hysteresis
PUVLO Input Impedance
PWM DCENI CONTROL
DCENI Comparator Input
Common-Mode Range
DCENI Comparator Offset
DCENI Comparator Hysteresis
DCENI Input Current
THRESH Operating Voltage
Range
THRESH Input Current
Default DCENI Threshold
SENSE to AGND....................................................-0.3V to +6V
IN
_______________________________________________________________________________________
= 12V or V
PARAMETER
IN
= V
REG
= 5V, V
DREG
SYMBOL
V
PUVLO
= V
V
IN
REG
, V
V
V
V
V
V
V
V
V
V
V
PGND
IN
IN
IN
IN
IN
PUVLO
DCENI
THRESH
THRESH
THRESH
REG
BST
DREG
IN
= V
= 16V, V
= 16V, V
= 16V, V
rising
+ 0.3V)
+ 0.3V)
+ 0.3V)
= 0V, V
REG
- V
+ 6V)
rising
> 0.6V
< 0.3V
< 0.3V
THRESH
= V
PUVLO
FB
FB
A
SYNCIN
CONDITIONS
= T
DREG
= 0.9V
= 0V
J
= 0V
Continuous Power Dissipation (T
Operating Ambient Temperature Range .............-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) ......…………………..+300°C
= +25°C.) (Note 1)
(Note 2)
= 0V, R
32-Pin TQFN (derate 34.5 mW/°C above +70°C) .2758.6mW
32-Pin TQFN (θ
32-Pin TQFN (θ
RT
= 100kΩ, R
JA
JC
) ....................................................+29°C/W
) ...................................................+2.1°C/W
ILIM
1.202
1.202
MIN
-1.5
180
-10
0.6
4.5
6.7
-1
-5
= 60kΩ, C
8
0
A
= +70°C)
1.220
TYP
1.22
122
310
100
0.3
1.6
5.0
0.7
REG
= 2.2µF, T
1.238
1.238
MAX
+10
500
5.5
0.5
2.6
8.0
7.3
2.5
+1
+1
+1
16
3
A
UNITS
= T
mA
mA
mA
mV
mV
mV
kΩ
µA
µA
V
V
V
V
V
V
V
J
=