LTC3576EUFE-1#PBF Linear Technology, LTC3576EUFE-1#PBF Datasheet - Page 35

• Manufacturer Part Number: LTC3576EUFE-1#PBF
• Description: IC POWER MANAGER W/USB OTG 38QFN
• Manufacturer: Linear Technology

Specifications of LTC3576EUFE-1#PBF

• Applications: Handheld/Mobile Devices
• Voltage - Supply: 4.35 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 38-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -

The inductor value also has an effect on Burst Mode op-
eration. Lower inductor values will cause the Burst Mode
operation switching frequency to increase.
Table 8 shows several inductors that work well with the
LTC3576/LTC3576-1’s general purpose regulators. These
inductors offer a good compromise in current rating, DCR
and physical size. Consult each manufacturer for detailed
information on their entire selection of inductors.
Table 8. Recommended Inductors
INDUCTOR
TYPE
DE2818C
D312C
DE2812C
CDRH3D16
CDRH2D11
CLS4D09
SD3118
SD3112
SD12
SD10
LPS3015
*Typical DCR
Step-Down Switching Regulator Input/Output Bypass
Capacitor Selection
Low ESR (equivalent series resistance) MLCCs should
be used at each switching regulator output as well as at
each switching regulator input supply (V
or X7R ceramic capacitors should be used because they
retain their capacitance over wider voltage and temperature
ranges than other ceramic types. A 10μF output capaci-
APPLICATIONS INFORMATION
(μH)
4.7
3.3
4.7
3.3
2.2
4.7
3.3
2.0
4.7
3.3
2.2
4.7
3.3
2.2
4.7
4.7
3.3
2.2
4.7
3.3
2.2
4.7
3.3
2.2
4.7
3.3
2.2
4.7
3.3
2.2
L
MAX
1.25
1.45
0.79
0.90
1.14
0.78
0.75
1.59
0.97
1.12
1.29
1.42
1.80
1.08
1.31
1.65
I
(A)
1.2
1.4
1.8
0.9
1.1
1.2
0.5
0.6
1.3
2.0
0.8
1.1
1.3
1.5
DC
0.067*
0.117*
0.104*
0.075*
0.153*
0.108*
0.091*
0.072
0.053
1.13*
0.10*
0.085
0.072
0.123
0.098
0.162
0.113
0.074
0.246
0.165
MAX
DCR
0.24
0.20
0.14
0.11
0.17
0.19
0.14
0.13
0.11
(Ω)
0.2
3.0 × 2.8 × 1.8
3.0 × 2.8 × 1.8
3.6 × 3.6 × 1.2
3.6 × 3.6 × 1.2
3.6 × 3.6 × 1.2
3.0 × 2.8 × 1.2
3.0 × 2.8 × 1.2
3.0 × 2.8 × 1.2
4.0 × 4.0 × 1.8
4.0 × 4.0 × 1.8
4.0 × 4.0 × 1.8
3.2 × 3.2 × 1.2
3.2 × 3.2 × 1.2
3.2 × 3.2 × 1.2
4.9 × 4.9 × 1.0
3.1 × 3.1 × 1.8
3.1 × 3.1 × 1.8
3.1 × 3.1 × 1.8
3.1 × 3.1 × 1.2
3.1 × 3.1 × 1.2
3.1 × 3.1 × 1.2
5.2 × 5.2 × 1.2
5.2 × 5.2 × 1.2
5.2 × 5.2 × 1.2
5.2 × 5.2 × 1.0
5.2 × 5.2 × 1.0
5.2 × 5.2 × 1.0
3.0 × 3.0 × 1.5
3.0 × 3.0 × 1.5
3.0 × 3.0 × 1.5
SIZE IN mm
(L × W × H)
MANUFACTURER
Toko
www.toko.comm
Sumida
www.sumida.com
Cooper
www.cooperet.com
Coilcraft
www.coilcraft.com
INx
). Only X5R
tor is suffi cient for most applications. For good transient
response and stability the output capacitor should retain
at least 4μF of capacitance over operating temperature and
bias voltage. Each switching regulator input supply should
be bypassed with a 1μF capacitor. Consult with capacitor
manufacturers for detailed information on their selection
and specifi cations of ceramic capacitors. Many manufac-
turers now offer very thin (<1mm tall) ceramic capacitors
ideal for use in height-restricted designs. Table 9 shows a
list of several ceramic capacitor manufacturers.
Table 9. Recommended Ceramic Capacitor Manufacturers
AVX
Murata
Taiyo Yuden
Vishay Siliconix
TDK
Overvoltage Protection
V
additional components, a resistor R1 and an N-channel
MOSFET MN1, as shown in Figure 6. Suitable choices for
MN1 are listed in Table 10.
R1 is a 6.2k resistor and must be rated for the power dis-
sipated during maximum overvoltage. In an overvoltage
condition the OVSENS pin will be clamped at 6V. R1 must
be sized appropriately to dissipate the resultant power.
For example, a 1/10W 6.2k resistor can have at most
√P
the 6V at OVSENS, the maximum overvoltage magnitude
that this resistor can withstand is 31V. A 1/4W 6.2k resistor
raises this value to 45V. OVSENS’s absolute maximum
current rating of 10mA imposes an upper limit of 68V
protection.
Table 10. Recommended N-channel MOSFETs for the
Overvoltage Protection Circuit
PART NUMBER
BUS
NTLJS4114N
IRLML2502
Si2302ADS
Si2306BDS
Si2316BDS
MAX
Si1472DH
FDN372S
can be protected from overvoltage damage with two
• 6.2kΩ = 25V applied across its terminals. With
LTC3576/LTC3576-1
BVDSS
30V
20V
30V
30V
20V
30V
30V
www.avxcorp.com
www.murata.com
www.t-yuden.com
www.vishay.com
www.tdk.com
82mΩ
60mΩ
65mΩ
80mΩ
35mΩ
50mΩ
35mΩ
R
ON
PACKAGE
SC70-6
WDFN6
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
35
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