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EUP7965-15VIR1
Datasheet (Eutech) [ru]
16 pgs389.69 Kb0

Datasheet EUP7965-15VIR1, EUP7965-18VIR1, EUP7965-25VIR1, EUP7965-285VIR1, EUP7965-28VIR1 Datasheet (Eutech) [ru]

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EUP7965
≤
150mA Low-Noise Low-Dropout
Linear Regulator
DESCRIPTION
FEATURES
z 2.5 to 5.5V Input Range z 150mA Guaranteed Output z 70dB PSRR at 1kHz @ V
IN=VOUT
z 50µVrms Output Noise (typ) over 10Hz to
100kHz
z 100mV Maximum Dropout with 150mA Load z Low 85µA No-load Supply Current z
1.5µA Shutdown Current
z Fast Start-up time. z Stable with 1µF Ceramic Capacitors z Thermal Shutdown and Short-circuit Protection z Preset Output Voltage 1.5V, 1.8V, 2.5V, 2.8V,
2.85V, 3.0V ,3.3V, 4.8V ,5.0V and adjustable
z SOT23-5,SOT23-6 package z RoHS Compliant and 100% Lead (Pb)-Free
+1V
APPLICATIONS
Block Diagram
z Cellular and Cordless Handsets z Bluetooth, Wireless LAN z PDAs and Palmtop Computers z Portable Information Appliances
Figure 1.
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EUP7965
T ypical Application Circuit
Figure 2.
Figure 3.
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EUP7965
Pin Configurations
Part Number Pin Configurations
EUP7965
SOT23-5
EUP7965
SOT23-6
Pin Description
PIN SOT23-5 SOT23-6 DESCRIPTION
VIN 1 1 Input voltage of the LDO
GND 2 2 Common ground
VEN 3 3 Enable input logic, enable high
BYPASS 4 4 Optional bypass capacitor for noise reduction
SET 5
V
5 6 Output voltage of the LDO
OUT
Output voltage set. Not externally connected for the fixed versions. Connect to resistor-divider for adjustable output voltage.
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EUP7965
Ordering Information
Order Number Package Type Marking Operating Temperatur e range
□ □
EUP7965-15VIR1 SOT23-5 EUP7965-18VIR1 SOT23-5
EUP7965-25VIR1 SOT23-5
EUP7965-28VIR1 SOT23-5
EUP7965-285VIR1 SOT23-5
EUP7965-30VIR1 SOT23-5
EUP7965-33VIR1 SOT23-5
EUP7965-48VIR1 SOT23-5
EUP7965-50VIR1 SOT23-5
EUP7965VIR1 SOT23-6
G0 G1 G2 G6 G8 G5 G3 G7 G4 GA
□ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □
-40 °C to 85°C
-40 °C to 85°C
-40 °C to 85°C
-40 °C to 85°C
-40 °C to 85°C
-40 °C to 85°C
-40 °C to 85°C
-40 °C to 85°C
-40 °C to 85°C
-40 °C to 85°C
EUP7965-□ □ □ □ □ □ □
Lead Free Code
1: Lead Free 0: Lead
Packing
R: Tape & Reel
Operating temperature range I: Industry Standard
Output Voltage
15: 1.5V
28: 2.8V 285: 2.85V 30: 3.0V 33: 3.3V 48: 4.8V 50: 5.0V
Blank: Adjustable
Package Type
V: SOT-23
18: 1.8V 25: 2.5V
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EUP7965
Absolute Maximum Ratings
V V Junction Temperature ------------------------------------------------------------------- 150°C Storage Temperature ------------------------------------------------------ -65°C to +150°C Lead Temp ------------------------------------------------------------------------------ 235°C Pad Temp ------------------------------------------------------------------------------- 235°C Maximum Power Dissipation SOT23-5 --------------------------------------------- 364mW Thermal Resistance θ ESD Rating
------------------------------------------------------------------------------- -0.3 to 6V
IN,VEN
----------------------------------------------------------------- -0.3 to (V
OUT
(SOT23-5) --------------------------------------------------- 220°C/W
JA
Human Body Model -------------------------------------------------------------------
Operating Ratings
V V Junction Temperature ------------------------------------------------------ -40°C to +125°C
-------------------------------------------------------------------------------------- 2.5 to 5.5V
IN
------------------------------------------------------------------------- 0 to (VIN+0.3)
EN
Electrical Characteristics
Unless otherwise specified, all limits guaranteed for VIN= V C
=0.01µF. Typical values and limits appearing in standard typeface are for TJ= 25°C.
BYPASS
OUT(nom)
+0.5V, CIN=1µF, I
Symbol Parameter Conditions
ΔV
Output Voltage Tolerance I
Line Regulation Error
OUT
= 1mA -2 2
OUT
V
IN
= (V
OUT(nom)
+0.5V) to 5.5V, For 4.8 to 5.0 options For all other options
+0.3) ≤ 6V
IN
2kV
5.5V
≤
=1mA, C
OUT
OUT
=1µF,
EUP7965
Min Typ Max.
V
-0.19
-0.1
0.19
0.1
Unit
% of
OUT(nom)
%/V
Load Regulation Error I
PSRR
Power Supply Rejection Ratio
IQ Quiescent Current
Dropout Voltage
= 1mA to 150mA 0.0025 0.005 %mA
OUT
V
IN=VOUT(nom)
=50mA*6
I
OUT
VEN=1.4V, I For 4.8 to 5.0 options For all other options VEN = 1.4V, I For 4.8 to 5.0 options For all other options
V
= 0.4V 0.06 1.5
EN
I
= 1mA 0.5 2
OUT
I
= 50mA 25 35
OUT
I
= 100mA 50 70
OUT
= 150mA 75 100
I
OUT
+1V, f = 1kHz,
= 0mA
OUT
= 0 to 150mA
OUT
70 dB
100
85
155 140
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165 150
250 200
µA
mV
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EUP7965
Electrical Characteristics
Unless otherwise specified, all limits guaranteed for VIN= V C
=0.01µF. Typical values and limits appearing in standard typeface are for TJ= 25°C.
BYPASS
OUT(nom)
+0.5V, CIN=1µF, I
=1mA, C
OUT
OUT
=1µF,
Symbol Parameter Conditions
Min Typ Max.
EUP7965
ISC Short Circuit Current Limit Output Grounded (Steady State) 600 mA
T
Turn-On Time C
ON
e
IEN
VIL
VIH
Output Noise Voltage
n
Maximum Input Current at
EN Maximum Low Level Input Voltage at EN Minimum High Level Input Voltage at EN Thermal Shutdown Temperature
TSD
Thermal Shutdown Hysteresis
BW = 10Hz to 100kHz, C
VEN = 0.4 and VIN = 5.5 ±1 nA
VIN = 2.5 to 5.5V 0.4 V
VIN = 2.5 to 5.5V 1.4 V
160 °C
BYPASS
= 1µF
OUT
= 0.01µF
150
50 µVrms
20 °C
Unit
µs
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EUP7965
Typical Operating Characteristics
Unless otherwise specified, CIN=C tied to V
IN.
=1µF Ceramic, C
COUT
=10nF, VIN=V
BYPASS
+0.2V, TA=25°C, Enable pin is
OUT
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EUP7965
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EUP7965
Application Note
External Capacitors
Like any low-dropout regulator, the EUP7965 requires external capacitors for
regulator stability. The EUP7965
is specifically designed for portable applications requiring minimum board space and smallest components. These capacitors must be correctly selected for good performance.
Input Capacitor
An input capacitance of
1µF is required between the
≈
EUP7965 input pin and ground (the amount of the capacitance may be increased without limit). This capacitor must be located a distance of not more than 1cm from the input pin and returned to a clean analog ground. Any good quality ceramic, tantalum, or film capacitor may be used at the input.
If a tantalum capacitor is used at the input, it must be guaranteed by the manufacturer to have a
surge current
rating sufficient for the application. There are no requirements for the ESR on the input capacitor, but tolerance and temperature coefficient must be considered when selecting the capacitor to capacitance will be
1µF over the entire operating
≈
ensure the
temperature range.
Output Capacitor
The EUP7965 is designed specifically to work with very small ceramic output capacitors. A ceramic capacitor (temperature characteristics X7R, X5R, Z5U, or Y5V) in 1 to 22µF range with 5mΩ to
500mΩ ESR range is
suitable in the EUP7965 application circuit. The output capacitor must meet the requirement for minimum amount of capacitance and also have an ESR (Equivalent Series Resistance) value which is within a stable range (5mΩ to 500mΩ)
No-Load Stability
The EUP7965 will remain stable and in regulation with no external load. This is specially important in CMOS RAM keep-alive applications.
Capacitor Characteristics
The EUP7965 is designed to work with ceramic capacitors on the output to take advantage of the benefits they offer: for capacitance values in the range of 1µF to
4.7µF range, ceramic capacitors are the smallest, least expensive and have the lowest ESR values (which makes them best for eliminating high frequency noise). The ESR of a typical 1µF ceramic capacitor is in the range of 20mΩ to 40mΩ, which easily meets the ESR requirement for stability by the EUP7965. The ceramic capacitor’s capacitance can vary with temperature. The capacitor type X7R, which operates over a temperature range of -55°C to +125°C, will only vary the capacitance to within ±15%. Most large value ceramic capacitors (
2.2µF) are manufactured with Z5U
≈
or Y5V temperature characteristics. Their capacitance can drop by more than 50% as the temperature goes from 25°C to 85°C. Therefore,
X7R is recommended over Z5U
and Y5V in applications where the ambient temperature will change significantly above or below 25°C.
Noise Bypass Capacitor
Connecting a 0.01µF capacitor between the
C
BYPASS
and ground significantly reduces noise on the regulator output. This cap is connected directly to a high impedance node in the bandgap reference circuit. Any significant loading on this node will cause a change on the regulated output voltage.
For this reason, DC leakage
current through this pin must be kept as low as possible for best output voltage
accuracy. The types of capacitors
best suited for the noise bypass capacitor are ceramic and film. Unlike many other LDO’s , addition of a noise reduction capacitor does not effect the
load transient response of
the device.
On/Off Input Operation
V
The EUP7965 is turned off by pulling the
pin low,
EN
and turned on by pulling it high. If this feature is not used, the V output on at all time. signal source used to drive the V
pin should be tied to VIN to keep the regulator
EN
To assure proper operation, the
input must be able
EN
to swing above and below the specified turn-on/off voltage thresholds listed in the Electrical Characteristics section under V
and VIH.
IL
Fast Start up
The EUP7965 output starts up after Vref voltage reaches its final value (1.23V nomial). The start-up time is determined by the time constant of the bypass capacitor. The smaller the capacitor value., the shorter the start-up time, but less noise gets reduced. As a result, start-up time and noise reduction need to be taken into design consideration when choosing the value of the bypass capacitor.
pin
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EUP7965
Adjustable Operation
The adjustable version of the EUP7965 has an output voltage range of 1.25V to 5V. The output voltage of the EUP7965 adjustable regulator is programmed using an external resistor divider as shown in Figure3. The output voltage is calculated using:
R
1
(1VV
refO
Where: Vref=1.23V typ. (the internal reference voltage)
Utilize the following equation for adjusting the output to a particular voltage:
V
RP
I
2
1.23V
Choose R rejection, noise and power consumption.
In order to improve the stability of the adjustable version, it is suggested that a small compensation capacitor C placed between V
=100k to optimize accuracy, power supply
2
)
+×=
R
2
O
−= 1
 
and SET .
OUT
be
1
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EUP7965
Packaging Information
SOT23-5
Note:
1. Package body sizes exclude mold flash protrusions or gate burrs.
2. Tolerance ± 0.1000mm (4 mil) unless otherwise specified.
3. Coplanarity: 0.1000mm
4. Dimension L is measured in gage plane.
Symbols
A 1.00 1.10 1.30 A1 0.00 ----- 0.10 A2 0.70 0.80 0.90
b 0.35 0.40 0.50 C 0.12 0.15 0.20 D 2.70 2.90 3.10 E 1.50 1.60 1.70
e ----- 1.90(Typ.) ----­H 2.6 2.8 3.00 L 0.37 ----- -----
θ1
Dimension in Millimeters
Min. Nom Max.
14 5 9
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EUP7965
SOT23-6
SYMBOLS
DIMENSIONS IN MILLIMETERS
MIN. NOM. MAX.
A ------ ------ 1.45 A1 ------ ------ 0.15 A2 0.90 1.15 1.30
b 0.30 ------ 0.50 C 0.08 ------ 0.22 D 2.90 BSC E 2.80 BSC
E1 1.60 BSC
e 0.95 BSC
E1 1.90 BSC
L 0.30 0.45 0.60
L1 0.60 REF L2 0.25 BSC
R 0.10 ------ ------
R1 0.10 ------ 0.25
θ
θ1
0° 4° 8° 5° 10° 15°
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