ETC TEA1723FT

TEA1723FT
Ultra-low standby SMPS controller with integrated power
switch
Rev. 1 — 27 January 2012
Preliminary data sheet
1. Product profile
1.1 General description
The TEA1723 is a small and low cost module Switched Mode Power Supply (SMPS)
controller IC for power applications (up to 11 W) and operates directly from the rectified
universal mains input. The device includes a high voltage power switch (700 V) and has
been optimized for flyback converter topologies to provide high-efficiency over the entire
load range with ultra-low power consumption in the no-load condition. It provides a circuit
for start-up directly from the rectified mains voltage without any external bleeder circuits.
The converter operates as a regulated voltage source from no-load up to the maximum
output current and operates as current source that delivers the maximum current over a
broad output voltage range. Using the TEA1723, a low power converter can be built at
minimum cost and with the minimum number of external components.
The controller regulates the output voltage with primary-side sensing which eliminates the
need for an additional secondary feedback circuitry and simplifies the design. At higher
power levels, a frequency and current control mode is used. It operates with burst mode
control at low power levels and no-load condition. The burst mode minimizes audible
noise and provides an energy saver state which reduces the power consumption in
no-load condition. The Burst mode frequency of 1850 Hz enables no-load power
consumption < 53 mW at 230 V (AC) mains input.
1.2 Features and benefits
Power features:
 Low power SMPS controller with integrated power switch designed for applications up
to 11 W
 700 V high voltage power switch for global mains operation
 Primary sensing for control of the output voltage without optocoupler and secondary
feedback circuitry
 Minimizes audible noise in all operation modes
 Energy Star 2.0 compliant
 Jitter function for reduced EMI
TEA1723FT
NXP Semiconductors
Ultra-low standby SMPS controller with integrated power switch
Green features:
 Enables no-load power consumption below < 53 mW
 Very low supply current in no-load condition with energy saver mode
 Incorporates a high voltage start-up circuit with zero current consumption under
normal switching operation
 Available in halogen-free and Restriction of Hazardous Substances (RoHS) SO7
package
Protective functions:
 OverVoltage Protection (OVP) on IC supply pin and on Feedback control (FB) pin with
auto-restart
 UnderVoltage LockOut (UVLO) protection on IC supply pin
 OverTemperature Protection (OTP)
 Soft-start by reduced peak current for zero and low output voltage
 Demagnetization protection for guaranteed discontinuous conduction mode operation
 Open and short-circuit protection of the Feedback control (FB) pin
1.3 Applications
 Battery chargers for cellular phones, tablet pc and other power adapters up to 11 W
 Standby supply for TV, desktop PC and set-top boxes
 Power supply for white goods applications
1.4 Quick reference data
Table 1.
Symbol
Quick reference data
Parameter
Conditions
Min
Typ
Max Unit
Ids = 30 mA; Tj = 25 °C
-
4.1
-
Power switch (Pin: DRAIN)
RDSon
drain-source
on-state
resistance
Ω
Oscillator (Pins: DRAIN and SOURCE)
fburst
burst frequency
burst frequency in CVB mode,
without jitter
1665 1850 2035 Hz
fosc-high
oscillator
frequency High
maximum switching frequency
in CV and CC mode, without
jitter
48
50.5 53
kHz
15
17
19
V
7.5
8.5
9.5
V
Supply (Pin: VCC)
TEA1723FT
Preliminary data sheet
VCC(startup)
start-up supply
voltage
VCC(stop)
stop supply
voltage
undervoltage lockout of IC
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Rev. 1 — 27 January 2012
© NXP B.V. 2012. All rights reserved.
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Ultra-low standby SMPS controller with integrated power switch
2. Ordering information
Table 2.
Ordering information
Type number
Package
TEA1723FT/N1
Name
Description
Version
SO7
plastic small outline package; 7 leads; body width 3.9 mm
SOT1175-1
3. Block diagram
3.1 Block diagram
start-up source
VCC
START
STOP
DRAIN
VOVP(VCC)
REFERENCES
AND
TEMPERATURE
PROTECTION
OTP
BURST
REGULATOR
Vref
FB
VFBS
SENSOR
demag
fosc,
VSOURCE AND
JITTER
controller and cable REGULATOR
VOVP(FBS)
OSCILLATOR
fburst
fSW
CONTROL
LOGIC
driver
power
switch
compensation
VSOURCE
comparator
SOURCE
GND
Vpeak
TEA1723
001aao250
Fig 1.
Block diagram
TEA1723FT
Preliminary data sheet
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Ultra-low standby SMPS controller with integrated power switch
4. Pinning information
4.1 Pinning
7
DRAIN
3
6
SOURCE
4
5
VCC
GND1
1
GND2
2
GND3
FB
TEA1723
001aao249
Fig 2.
Pinning top view
4.2 Pin description
Pin
Pin name
I/O type
Pin description
1
GND1
ground
2
GND2
ground
3
GND3
ground
4
FB
I
feedback input for voltage sensing
5
VCC
I
supply input
6
SOURCE
O
source for power switch
7
DRAIN
I
drain of power switch
-
-
high voltage spacer
5. Functional description
5.1 Start-up
The TEA1723 starts up by charging the VCC capacitor until the VCC(start) level. The
charging current flows from the high voltage DRAIN pin via an internal start-up current
source to the VCC pin.
Once the start level has been reached the start-up current source is switched off. During
switching operation, the start-up current source remains current-less and has zero
bleeder loss.
5.2 Primary sensing
The FB input senses the reflected secondary voltage on the primary side. The FB input
has a sample and hold function that samples the FB voltage on the secondary stroke to
control the output voltage.
The sampled VFBS voltage is the input for the TEA1723’s control loop and defines the
operating mode.
TEA1723FT
Preliminary data sheet
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Ultra-low standby SMPS controller with integrated power switch
5.3 Operating modes
The TEA1723 operates in three modes, one of which is active at the time. The three
modes in order of decreasing load impedance are:
• CVB: Constant Voltage with Burst mode
• CV: Constant Voltage mode
• CC: Constant Current mode
The converter acts as a voltage source in CVB and CV modes.
The converter acts as a current source in CC mode.
5.3.1 Constant Voltage with Burst mode (CVB)
At low power, the TEA1723 operates in Burst mode.
Burst mode operates with a VSOURCE = 100 mV, a switching frequency of 22.5 kHz and
burst duty-cycle regulation by sensing the FB voltage.
The TEA1723 features an energy save function that puts the main part of the analogue
blocks in a sleep mode with low supply current in burst mode. The burst mode enables the
energy save mode in the non-switching part of the burst. The IC switches to the nominal
supply just before new burst starts.
Transition from burst mode to CV mode happens at 100 % burst duty cycle: a burst
completely filled with 32 pulses. This 100 % pulse train is identical to the lowest power
level of the CV mode. The TEA1723 changes directly from burst mode to current mode if
the FB voltage drops below 2.4 V in burst mode.
5.3.2 Constant Voltage mode (CV)
At higher power levels, the TEA1723 operates in CV mode. The output voltage is sensed
by the FB pin and the control keeps the output voltage constant over the power range.
CV mode starts at 22.5 kHz switching frequency and ISOURCE regulation at the VSOURCE
minimum level of 100 mV.
With an increasing power output, the VSOURCE level and the switching frequency are also
increased.
CV mode is exited when the maximum power level is reached. Maximum power occurs at
ISOURCE regulation at the VSOURCE maximum level of 555 mV and a maximum switching
frequency of 50.5 kHz.
TEA1723FT
Preliminary data sheet
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Rev. 1 — 27 January 2012
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TEA1723FT
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Ultra-low standby SMPS controller with integrated power switch
5.3.3 Constant Current mode (CC)
The CC mode starts at maximum power delivery and keeps the output current constant for
decreasing output voltage.
CC mode is enabled when the converter is operating at the maximum switching
frequency, with the maximum primary peak current when the FB voltage drops below the
regulated level.
CC mode operation controlled is by regulation of the switching frequency from 50.5 kHz
down to 25 kHz and by ISOURCE regulation from the maximum VSOURCE level of 555 mV
until level of VSOURCE is 0.18 V. The VSOURCE level of 0.18 V equals the level at start-up
with zero output voltage and the output capacitor discharged.
5.4 Jitter
The TEA1723 features a jitter function for ElectroMagnetic Interference (EMI) reduction.
The switching frequency varies between –8 % and +8 % for the spread spectrum. The
sweep frequency is a low frequency of approximately 200 Hz. To keep the output power
constant, the VSOURCE level is jittered with the opposite polarity. The jitter is active in all
operation modes except burst mode.
TEA1723FT
Preliminary data sheet
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Rev. 1 — 27 January 2012
© NXP B.V. 2012. All rights reserved.
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Ultra-low standby SMPS controller with integrated power switch
6. Limiting values
Table 3.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
Tamb
Conditions
Min
Max
Unit
ambient temperature
-40
+85
°C
Tj
junction temperature
-40
+150
°C
Tstg
storage temperature
VESD
electrostatic discharge voltage
CDM; all pins
-55
+150
°C
-500
+500
V
HBM; all pins, except pin 7
[1]
-2000
+2000 V
HBM; pin 7
[1]
-1000
+1000 V
Voltages
VDRAIN
voltage on pin DRAIN
-0.3
+700
V
VSOURCE
voltage on pin SOURCE
-0.3
+5
V
VCC
voltage on pin VCC
-0.3
+60
V
VFB
voltage on pin FB
-20
+5
V
IDRAIN
current on pin DRAIN
0
1.5
A
ISOURCE
current on pin SOURCE
-1.5
0
A
ICC
current on pin VCC
0
20
mA
IFB
current on pin FB
-1
+1
mA
Currents
[1]
Human body model: equivalent to discharging a 100 pF capacitor through a 1.5 kΩ series resistor.
7. Thermal characteristics
Table 4.
Thermal characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Rth(j-a)
thermal resistance
from junction to
ambient
in free air; SO7 package, PCB:
2.5 cm X 3 cm, 2-layer, 70 µm Cu
-
158
-
K/W
in free air; SO7 package, PCB:
3 cm X 6 cm, 1-layer, 35 µm Cu
-
130
-
K/W
TEA1723FT
Preliminary data sheet
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TEA1723FT
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Ultra-low standby SMPS controller with integrated power switch
8. Characteristics
Table 5.
Characteristics
VCC = 20 V; VFB = 0 V; Rsource = 0.75 Ω; Tj-switch = 25 °C; Tj-controller = 25 °C; all voltages referenced to GND,
positive currents flow into the IC, unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Supply (Pin: VCC)
ICC(startup)0V
start-up supply current
VCC = 0 V
-
-1.2
-
mA
ICC(startup)17V
start-up supply current
VCC = VCC(startup)
-
-0.7
-
mA
ICC(energysave)
supply current in
energy save
VFB = 2.8 V, non-switching
90
130
170
µA
ICC(50kHz)
supply current at
50 kHz
530
750
970
µA
VCC(startup)
start-up supply voltage
15
17
19
V
VCC(stop)
stop supply voltage
7.5
8.5
9.5
V
Vovp-VCC
overvoltage protection
voltage level on VCC
40
42
44
V
Totp
overtemperature
protection threshold
temperature on
controller die
-
150
-
°C
Totp(hys)
overtemperature
protection temperature
hysteresis
-
50
-
°C
undervoltage lockout of IC
Feedback (Pin: FB)
Vovp-FB
overvoltage protection
voltage level on
regulated flyback
voltage
3.1
3.2
3.3
V
Vsense(fb)CVB
regulated flyback
sense voltage in CVB
mode
2.5
2.55
2.6
V
Vsense(fb)CVB_low threshold flyback
in burst mode operation
sense voltage for direct
transition from CVB
mode to CVC mode
due to low output
-
2.4
-
V
Vsense(fb)CV
regulated flyback
sense voltage in CV
mode
2.5
2.55
2.6
V
Vth(det)demag(fb)
demagnetization
detection voltage level
on FB pin
25
50
75
mV
Oscillator (Pins: DRAIN and SOURCE)
fburst
burst frequency
burst frequency in CVB mode, without
jitter
1665
1850
2035
Hz
fjit/fsw
jitter frequency to
switching frequency
ratio
in all operation modes except in burst
modes
5
7
9
%
TEA1723FT
Preliminary data sheet
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Ultra-low standby SMPS controller with integrated power switch
Table 5.
Characteristics …continued
VCC = 20 V; VFB = 0 V; Rsource = 0.75 Ω; Tj-switch = 25 °C; Tj-controller = 25 °C; all voltages referenced to GND,
positive currents flow into the IC, unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fosc-high
oscillator frequency
High
maximum switching frequency in CV
and CC mode, without jitter
48
50.5
53
kHz
fosc-low
oscillator frequency
Low
minimum switching frequency in CV
and CC mode, without jitter. Switching
frequency in CVB mode
21
22.5
24
kHz
fsweep
jitter sweep frequency
in current source operation
150
200
250
Hz
δmax
maximum duty cycle
72
75
78
%
Power switch (Pin: DRAIN)
Idrain(off)
off-state drain current
VDRAIN = 325 V
-
1
-
µA
Idrain(start-up)
start-up drain current
VCC = 0 V
-
1
-
mA
RDSon
drain-source on-state
resistance
Tj = 25 °C; Ids = 30 mA
-
4.1
-
Ω
V(BR)DS
drain-source
breakdown voltage
700
-
-
V
-
100
-
ns
Peak current comparator (Pin: SOURCE)
td(ocp)
overcurrent protection
delay time
tleb
leading edge blanking
time
290
325
360
ns
Vref-peak-high
reference voltage, high in CVF and CCF modes
peak voltage
0.525
0.555
0.585
V
Vref-peak-low
reference voltage, low
peak voltage
in CVB mode
0.085
0.1
0.115
V
Vref-0 V
reference voltage at
start-up or 0 V
feedback voltage
in CCC mode with VFBS = 0 V
0.18
0.21
0.24
V
TEA1723FT
Preliminary data sheet
dV/dt = 0.2 V/µs
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TEA1723FT
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Ultra-low standby SMPS controller with integrated power switch
9. Package outline
SO7: plastic small outline package; 7 leads; body width 3.9 mm
SOT1175-1
D
A
E
X
c
HE
y
v
A
Z
7
5
Q
A2
A
A1
A3
θ
pin 1 index
Lp
L
1
4
detail X
e
w
bp
0
2.5
5 mm
scale
Dimensions
Unit
mm
A
A1
A2
A3
bp
c
0.49 0.25
max 1.75 0.250 1.45
0.175 1.35 0.25 0.40 0.20
nom
0.100 1.25
0.36 0.19
min
D
E
5.0
4.9
4.8
4.0
3.9
3.8
e
HE
1.27
6.2
6.0
5.8
L
Lp
1.05
1.0
0.7
0.4
Q
v
w
0.70
0.67
0.60 0.25 0.25
y
Z
θ
0.1
0.7
0.5
0.3
8°
4°
0°
Note
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.
References
Outline
version
IEC
JEDEC
JEITA
SOT1175-1
---
---
---
Fig 3.
sot1175-1_po
European
projection
Issue date
10-03-30
10-04-21
Package outline SOT1175-1 (SO7)
TEA1723FT
Preliminary data sheet
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Rev. 1 — 27 January 2012
© NXP B.V. 2012. All rights reserved.
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10. Revision history
Table 6.
Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
TEA1723FT v.1
20120127
Preliminary data sheet
-
-
TEA1723FT
Preliminary data sheet
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Rev. 1 — 27 January 2012
© NXP B.V. 2012. All rights reserved.
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Ultra-low standby SMPS controller with integrated power switch
11. Legal information
11.1 Data sheet status
Document status [1] [2]
Product status [3]
Definition
Objective [short] data sheet
Development
This document contains data from the objective specification for product development.
Preliminary [short] data sheet
Qualification
This document contains data from the preliminary specification.
Product [short] data sheet
Production
This document contains the product specification.
[1]
Please consult the most recently issued document before initiating or completing a design.
[2]
The term 'short data sheet' is explained in section "Definitions".
[3]
The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product
status information is available on the Internet at URL http://www.nxp.com.
11.2 Definitions
Preview — The document is a preview version only. The document is still
subject to formal approval, which may result in modifications or additions.
NXP Semiconductors does not give any representations or warranties as to
the accuracy or completeness of information included herein and shall have
no liability for the consequences of use of such information.
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local NXP Semiconductors sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Product specification — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
NXP Semiconductors and its customer, unless NXP Semiconductors and
customer have explicitly agreed otherwise in writing. In no event however,
shall an agreement be valid in which the NXP Semiconductors product is
deemed to offer functions and qualities beyond those described in the
Product data sheet.
11.3 Disclaimers
Limited warranty and liability — Information in this document is believed to
be accurate and reliable. However, NXP Semiconductors does not give any
representations or warranties, expressed or implied, as to the accuracy or
completeness of such information and shall have no liability for the
consequences of use of such information.
In no event shall NXP Semiconductors be liable for any indirect, incidental,
punitive, special or consequential damages (including - without limitation - lost
profits, lost savings, business interruption, costs related to the removal or
replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
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Notwithstanding any damages that customer might incur for any reason
whatsoever, NXP Semiconductors’ aggregate and cumulative liability towards
customer for the products described herein shall be limited in accordance
with the Terms and conditions of commercial sale of NXP Semiconductors.
TEA1723FT
Preliminary data sheet
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in life support, life-critical or
safety-critical systems or equipment, nor in applications where failure or
malfunction of an NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. NXP Semiconductors accepts no liability for inclusion and/or use of
NXP Semiconductors products in such equipment or applications and
therefore such inclusion and/or use is at the customer’s own risk.
Quick reference data — The Quick reference data is an extract of the
product data given in the Limiting values and Characteristics sections of this
document, and as such is not complete, exhaustive or legally binding.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Customers are responsible for the design and operation of their applications
and products using NXP Semiconductors products, and NXP Semiconductors
accepts no liability for any assistance with applications or customer product
design. It is customer’s sole responsibility to determine whether the NXP
Semiconductors product is suitable and fit for the customer’s applications and
products planned, as well as for the planned application and use of
customer’s third party customer(s). Customers should provide appropriate
design and operating safeguards to minimize the risks associated with their
applications and products.
NXP Semiconductors does not accept any liability related to any default,
damage, costs or problem which is based on any weakness or default in the
customer’s applications or products, or the application or use by customer’s
third party customer(s). Customer is responsible for doing all necessary
testing for the customer’s applications and products using NXP
Semiconductors products in order to avoid a default of the applications and
the products or of the application or use by customer’s third party
customer(s). NXP does not accept any liability in this respect.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those given in
the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanently and irreversibly affect
the quality and reliability of the device.
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 27 January 2012
© NXP B.V. 2012. All rights reserved.
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TEA1723FT
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Ultra-low standby SMPS controller with integrated power switch
Terms and conditions of commercial sale — NXP Semiconductors
products are sold subject to the general terms and conditions of commercial
sale, as published at http://www.nxp.com/profile/terms, unless otherwise
agreed in a valid written individual agreement. In case an individual
agreement is concluded only the terms and conditions of the respective
agreement shall apply. NXP Semiconductors hereby expressly objects to
applying the customer’s general terms and conditions with regard to the
purchase of NXP Semiconductors products by customer.
No offer to sell or license — Nothing in this document may be interpreted or
construed as an offer to sell products that is open for acceptance or the grant,
conveyance or implication of any license under any copyrights, patents or
other industrial or intellectual property rights.
Export control — This document as well as the item(s) described herein may
be subject to export control regulations. Export might require a prior
authorization from national authorities.
Non-automotive qualified products — Unless this data sheet expressly
states that this specific NXP Semiconductors product is automotive qualified,
the product is not suitable for automotive use. It is neither qualified nor tested
in accordance with automotive testing or application requirements. NXP
Semiconductors accepts no liability for inclusion and/or use of
non-automotive qualified products in automotive equipment or applications.
In the event that customer uses the product for design-in and use in
automotive applications to automotive specifications and standards, customer
(a) shall use the product without NXP Semiconductors’ warranty of the
product for such automotive applications, use and specifications, and (b)
whenever customer uses the product for automotive applications beyond
NXP Semiconductors’ specifications such use shall be solely at customer’s
own risk, and (c) customer fully indemnifies NXP Semiconductors for any
liability, damages or failed product claims resulting from customer design and
use of the product for automotive applications beyond NXP Semiconductors’
standard warranty and NXP Semiconductors’ product specifications.
11.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
Adelante, Bitport, Bitsound, CoolFlux, CoReUse, DESFire, EZ-HV,
FabKey, GreenChip, HiPerSmart, HITAG, I²C-bus logo, ICODE, I-CODE,
ITEC, Labelution, MIFARE, MIFARE Plus, MIFARE Ultralight, MoReUse,
QLPAK, Silicon Tuner, SiliconMAX, SmartXA, STARplug, TOPFET,
TrenchMOS, TriMedia and UCODE — are trademarks of NXP B.V.
HD Radio and HD Radio logo — are trademarks of iBiquity Digital
Corporation.
12. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
TEA1723FT
Preliminary data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 27 January 2012
© NXP B.V. 2012. All rights reserved.
13 of 14
TEA1723FT
NXP Semiconductors
Ultra-low standby SMPS controller with integrated power switch
13. Contents
1
1.1
1.2
1.3
1.4
2
3
3.1
4
4.1
4.2
1
5.1
5.2
5.3
5.4
5.3.1
5.3.2
5.3.3
6
7
8
9
10
11
11.1
11.2
11.3
11.4
12
Product profile . . . . . . . . . . . . . . . . . . . . . . . . . . .1
General description . . . . . . . . . . . . . . . . . . . . . .1
Features and benefits . . . . . . . . . . . . . . . . . . . . .1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Quick reference data . . . . . . . . . . . . . . . . . . . . .2
Ordering information . . . . . . . . . . . . . . . . . . . . . .3
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Pinning information . . . . . . . . . . . . . . . . . . . . . . .4
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . .4
Product profile . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Primary sensing . . . . . . . . . . . . . . . . . . . . . . . . .4
Operating modes . . . . . . . . . . . . . . . . . . . . . . . .5
Jitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Constant Voltage with Burst mode (CVB). . . . . .5
Constant Voltage mode (CV) . . . . . . . . . . . . . . .5
Constant Current mode (CC) . . . . . . . . . . . . . . .6
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . .7
Thermal characteristics . . . . . . . . . . . . . . . . . . .7
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Package outline . . . . . . . . . . . . . . . . . . . . . . . . .10
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . 11
Legal information. . . . . . . . . . . . . . . . . . . . . . . .12
Data sheet status . . . . . . . . . . . . . . . . . . . . . . .12
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Contact information. . . . . . . . . . . . . . . . . . . . . .13
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2012.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
Date of release: 27 January 2012
Document identifier: TEA1723FT