NCP691 PDF даташит
Спецификация NCP691 изготовлена «ON Semiconductor» и имеет функцию, называемую «Very Low Dropout Regulator (VLDO)». |
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Детали детали
Номер произв | NCP691 |
Описание | Very Low Dropout Regulator (VLDO) |
Производители | ON Semiconductor |
логотип |
14 Pages
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NCP690, NCP691, NCP692
www.Data
1 A, Low IGND, Very Low
Dropout Regulator (VLDO)
with/without Enable
The NCP690, NCP691, NCP692 CMOS LDO family provides 1 A
of output current with enhanced ESD in either fixed voltage options or
an adjustable output voltage from 5.0 V down to 1.25 V. This device is
designed for space constrained and portable battery powered
applications and offer additional features such as high PSRR, low
Quiescent and Ground current consumption, low noise operation,
short circuit and thermal protection. The device is designed to be used
with low cost ceramic capacitors and is packaged in the 6−Lead
DFN3x3 package.
Features
• Output Voltage Options: Adjustable, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5.0 V
– Other Options Possible
• Adjustable Output by External Resistors from 5.0 V down to 1.25 V
• Guaranteed 1 A Output Current
• ±1.5% Output Voltage Tolerance over All Operating Conditions
(Adjustable)
• ±2% Output Voltage Tolerance over All Operating Conditions
(Fixed)
• Typical Noise Voltage of 50 mVrms without a Bypass Capacitor
• Typical Dropout Voltage of 190 mV at 1 A (Vout = 2.5 V, TJ = 25°C)
• Active Output Discharge
• Active Low Enable Pin (NCP691 Device)
• Active High Enable Pin (NCP692 device)
• Enhanced ESD: 4 kV and 400 V
Applications
• Laptops and PCI Cards
• Modem Banks and Telecom Boards
• DSP, FPGA, Microprocessor Boards
• Portable, Battery−Power Applications
• Hard Disk Drives
• These are Pb−Free Devices
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DFN6 3x3
MN SUFFIX
1 CASE 506AH
MARKING DIAGRAM
1 xxxzz
AYWW
G
Pb−Free
xxx = 690, 691, 692
zz = 15, 18, 25, 33, 50, AD
A = Assembly Location
Y = Year
WW = Work Week
G = Pb−Free Package
PIN ASSIGNMENT
1
GND
1
GND
NCP690 − 6 PIN DFN
Fixed Version
(Bottom View)
NCP691, NCP692 −
6 PIN DFN
Fixed Version
(Bottom View)
1
GND
1
GND
© Semiconductor Components Industries, LLC, 2009
September, 2009 − Rev. 6
NCP690 − 6 PIN DFN
Adjustable Version
(Bottom View)
NCP691, NCP692 −
6 PIN DFN
Adjustable Version
(Bottom View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
1 Publication Order Number:
NCP690/D
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NCP690, NCP691, NCP692
VIN
CIN
1 mF**
1,6 IN
OUT 4
3 EN* NCP692 SNS 5
GND
2, EPAD
VOUT
COUT
1 mF**
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Note: * NCP692 device has EN active high
Note: ** Minimum value required for stability
Figure 1. NCP692 Typical Application Circuit for Fixed Version
(Output voltage versions: 1.5 V, 1.8 V, 2.5 V, 5.0 V)
VIN
CIN
1 mF**
1,6 IN
OUT 4
3
EN*
NCP691
SNS
5
GND
2, EPAD
VOUT
COUT
1 mF**
Note: * NCP691 device has EN active low
Note: ** Minimum value required for stability
Figure 2. NCP691 Typical Application Circuit for Fixed Version
(Output voltage versions: 1.5 V, 1.8 V, 2.5 V, 5.0 V)
VIN
CIN
1 mF*
1,6 IN
3 N/C
NCP690
GND
OUT 4
SNS 5
2, EPAD
VOUT
COUT
1 mF*
Note: * Minimum value required for stability
Figure 3. NCP690 Typical Application Circuit for Fixed Version
(Output voltage versions: 1.5 V, 1.8 V, 2.5 V, 5.0 V)
VIN 3.3 V
VEN
CIN
1 mF**
1,6 IN
OUT 5
NCP691−ADJ/
3
NCP692−ADJ
EN* ADJ
4
GND
2, EPAD
VOUT 2.5 V
R1
9.1 k
R2
9.1 k
COUT
1 mF**
Note: * NCP691−ADJ device has EN active low and
Note: * NCP692−ADJ device has EN active high
Note: ** Minimum value required for stability
Figure 4. NCP692 Typical Application Circuit for Adjustable Version
(Adjustable version for 1.25 V < VOUT ≤ 5.0 V)
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IN
N/C
GND
NCP690, NCP691, NCP692
MOSFET
DRIVER WITH
CURRENT LIMIT
THERMAL
SHUTDOWN
ENABLE
LOGIC
R2
BANDGAP
REFERENCE
R1
ACTIVE
DISCHARGE
Figure 5. NCP690 Block Diagram (Fixed Version)
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OUT
SNS
IN
EN
GND
MOSFET
DRIVER WITH
CURRENT LIMIT
THERMAL
SHUTDOWN
ENABLE
LOGIC
BANDGAP
REFERENCE
R1
R2
ACTIVE
DISCHARGE
Figure 6. NCP691 Block Diagram (Fixed Version)
OUT
SNS
IN
EN
GND
MOSFET
DRIVER WITH
CURRENT LIMIT
THERMAL
SHUTDOWN
ENABLE
LOGIC
R2
BANDGAP
REFERENCE
R1
ACTIVE
DISCHARGE
Figure 7. NCP692 Block Diagram (Fixed Version)
OUT
SNS
Table 1. PIN FUNCTION DESCRIPTION FOR FIXED VERSION
Pin No.
Pin Name
Description
1, 6 IN Voltage inputs which supplies the current to the regulator. Both of these pins should be connected
together for full output current capability
2
GND
Power supply ground of the regulator. Connected to the die through the lead frame. Soldered to the
copper plane allows for effective heat removal.
3 EN For NCP691 and NCP692 this pin functions as Enable Active Low and Enable Active High respect-
ively. For NCP690 this pin has no special meaning and should be left disconnected.
4
OUT
Regulated output voltage
5
SNS
Sense input. This pin should be connected directly to OUT pin.
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Номер в каталоге | Описание | Производители |
NCP690 | Very Low Dropout Regulator (VLDO) | ON Semiconductor |
NCP691 | Very Low Dropout Regulator (VLDO) | ON Semiconductor |
NCP6914 | 5 Channel PMIC: 1 DCDC Converter and 4 LDOs | ON Semiconductor |
NCP692 | Very Low Dropout Regulator (VLDO) | ON Semiconductor |
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