MAX5087BATE/V+T Maxim Integrated Products, MAX5087BATE/V+T Datasheet - Page 10

• Manufacturer Part Number: MAX5087BATE/V+T
• Description: IC REG LDO 5V/ADJ 400MA 16-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX5087BATE/V+T

• Regulator Topology: Positive Fixed or Adjustable
• Voltage - Output: 5V, 2.5 ~ 11 V
• Voltage - Input: 6.5 ~ 45 V
• Voltage - Dropout (typical): 0.9V @ 400mA
• Number Of Regulators: 1
• Current - Output: 400mA (Min)
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
Calculate package dissipation at the given temperature
as follows:
And establish the maximum current:
Example 3:
T
V
V
Calculate package dissipation at the given temperature
as follows:
And find the maximum output current:
In example 3 the maximum output current is calculated
as 666mA, however, the maximum output current can-
not exceed 400mA.
Use Figure 4 to quickly determine maximum allowable out-
put current for selected ambient temperatures.
For stable operation over the full temperature range
and with load currents up to 400mA, use a 15µF (min)
output capacitor with an ESR < 0.25Ω. To reduce noise
and improve load-transient response, stability, and
power-supply rejection use larger output capacitor val-
ues such as 22µF.
10
P
A
I
IN
OUT
OUT(MAX)
D
= +50°C
= +14V
______________________________________________________________________________________
=
= +10V
2.666W
I
OUT(MAX)
=
(14V) (10V)
(2.666W)
Output-Capacitor Selection and
−
0.0333
−
=
P
D
(14V) (5V)
(1.191W)
= 2.666W
°
W
=
C
666
(125 C
−
mA
Regulator Stability
°
⇒
−
I
OUT(MAX)
= 92 7
70 C)
°
.
=
mA
=
0
.
8345
4 0mA
0
W
Some ceramic capacitor dielectrics exhibit large
capacitance and ESR variation with temperature. For
capacitor dielectrics such as Y5V, use 22µF or more to
ensure stability at temperatures below -10°C. With X7R
or X5R dielectrics, 15µF should be sufficient at all oper-
ating temperatures. To improve power supply rejection
and transient response, use a minimum 47µF low-ESR
capacitor from IN to GND.
Figure 4. Maximum Output Current vs. Input Voltage (16-Pin
TQFN)
PROCESS: BiCMOS
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
0
5
10
15
20
V
IN
(V)
Chip Information
25
30
V
T
T
T
OUT
A
A
A
= +70°C
= +85°C
= +125°C
35
= +5V
40
45