Page 1
General Description
The MAX1583 white LED boost converter drives up to
five white LEDs with a constant current to provide camera flash/strobe in cell phones, PDAs, DSCs, and other
hand-held devices. The MAX1583 includes a 24V boost
converter and a high-voltage LDO current regulator for
high efficiency and long battery life. Two logic inputs
control four modes of operation: shutdown mode (0.5µA
max), movie mode for high-efficiency continuous lighting (programmable up to 100mA), precharge mode for
charging a reservoir capacitor to 24V while the LEDs
are off (POK output indicates a full reservoir capacitor),
and strobe mode for firing the flash during an exposure
with a regulated current programmable up to 300mA.
The MAX1583X, MAX1583Y, and MAX1583Z offer high,
medium, and low current limits, respectively, to allow
tradeoff between reservoir capacitor size and peak
input current.
The MAX1583 is available in a 10-pin 3mm x 3mm
TDFN package (0.8mm max height).
Applications
Camera Flashes/Strobes
Cell Phones and Smart Phones
PDAs and Digital Still Cameras
Features
♦ Supports Up to Five LEDs for Strobe or Flash
♦ Four Operational Modes
Strobe: Up to 300mA
Precharge: With POK Indicator
Movie: Up to 100mA
Shutdown: 0.01µA (typ) Quiescent Current
♦ Input Current Limiting
1A (MAX1583X)
500mA (MAX1583Y)
250mA (MAX1583Z)
♦ Small External Components
♦ 2.6V to 5.5V Input Range
♦ 24V Output Overvoltage Protection
♦ 80% Efficient (P
LED
/ PIN) Movie Mode
♦ Thermal-Shutdown Protection
♦ 10-Pin 3mm x 3mm TDFN Package
MAX1583
White LED Camera-Flash
Boost Converter
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-3135; Rev 0; 1/04
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
EVALUATION KIT
AVAILABLE
PART
TEMP RANGE
PIN-PACKAGE
MAX1583XETB
10 TDFN 3mm x 3mm
MAX1583YETB
10 TDFN 3mm x 3mm
MAX1583ZETB
10 TDFN 3mm x 3mm
8
9
10
OUT
LED
LX
3
2
1
MOV
IN
GND
7 EN2
4STB
6 EN1
5POK
TDFN
(3mm x 3mm)
MAX1583
TOP VIEW
Pin Configuration
PART
CURRENT LIMIT
TOP MARK
MAX1583XETB 1A ACJ
MAX1583YETB 500mA ACK
MAX1583ZETB 250mA ACL
Selector Guide
MAX1583
V
IN
2.6V TO 5.5V
LED
EN2
EN1
POK
GND
IN
LX
OUT
STB
MOV
I
LED
UP TO
300mA
EN1
0
0
1
1
SHUTDOWN
EN2
1
0
10PRECHARGE
MOVIE
STROBE
Typical Operating Circuit
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Page 2
MAX1583
White LED Camera-Flash
Boost Converter
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= V
EN1
= 3.0V, V
EN2
= 0V, V
OUT
= 20V, C
OUT
= 10µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at
T
A
= +25°C. Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
IN, EN1, EN2, POK to GND ......................................-0.3V to +6V
LX, OUT to GND .....................................................-0.3V to +30V
STB, MOV to GND .......................................-0.3V to (V
IN
+ 0.3V)
LED to GND..............................................-0.3V to (V
OUT
+ 0.3V)
I
LX
...................................................................................1.2A
RMS
Continuous Power Dissipation (TA = +70°C)
10-Pin 3mm x 3mm TDFN
(derate 24.4mW/°C above +70°C).............................1951mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage 2.6 5.5 V
Undervoltage-Lockout Threshold VIN rising, hysteresis = 40mV (typ)
V
OUT Input Bias Current 41015µA
LX switching, LEDs off 2
Quiescent-Current Precharge Mode
LX not switching, LEDs off
mA
TA = +25°C
0.5
Quiescent-Current Shutdown Mode
TA = +85°C 0.1
µA
Output Overvoltage-Lockout Threshold
V
OUT
rising, precharge or movie mode,
hysteresis = 500mV (typ)
24
V
LED Regulation Voltage Threshold V
LED
rising, movie mode 0.5 0.6 0.7 V
TA = +25°C
1
LED Input Leakage Current Precharge mode
T
A
= +85°C 0.1
µA
MOV, STB Regulation Voltage 600 mV
Current-Source Multiplier in Movie Mode I
LED
/ I
MOV
, I
MOV
up to 300µA 100 A/A
Current-Source Accuracy, Movie Mode R
MOV
= 2kΩ, V
LED
= 0.5V -7 ±1 +7 %
MOV Current-Source Dropout Voltage I
LED
= 25mA, R
MOV
= 2kΩ 0.1 V
Current-Source Multiplier in Strobe Mode
I
LED
/ I
STB
, I
STB
up to 300µA
A/A
Current-Source Accuracy, Strobe Mode R
STB
= 2kΩ, V
LED
= 3.0V -10
%
STB Current-Source Dropout Voltage I
LED
= 250mA, R
STB
= 2kΩ 0.9 V
MAX1583X
MAX1583Y
500
Current Limit
MAX1583Z
250
mA
POK Low Voltage I
SINK
= 1mA
0.1 V
TA = +25°C
1
POK Leakage
T
A
= +85°C 0.1
µA
EN1 = EN2 = GND
2.10 2.38 2.55
0.32
0.01
22.5
800 1000 1200
400
200
0.01
1000
±1.5 +10
0.05
0.01
25.5
600
300
Page 3
MAX1583
White LED Camera-Flash
Boost Converter
_______________________________________________________________________________________ 3
Note 1: All units are 100% production tested at TA= +25°C. Limits over the operating temperature range are guaranteed by design.
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
EN1
= 3.0V, V
EN2
= 0V, V
OUT
= 20V, C
OUT
= 10µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at
T
A
= +25°C. Note 1)
PARAMETER CONDITIONS
UNITS
EN1 and EN2 Input High Threshold VIN = 2.6V to 5.5V 1.6 V
EN1 and EN2 Input Low Threshold VIN = 2.6V to 5.5V 0.6 V
TA = +25°C
1
EN1 and EN2 Input Leakage EN_ = IN
T
A
= +85°C 0.1
µA
LX On-Resistance ILX = 200mA 1.3
Ω
TA = +25°C
5
LX Leakage VLX = 28V
T
A
= +85°C 0.1
µA
TA = 0°C to +85°C 0.8 1.0 1.2
Operating Frequency
T
A
= -40°C to +85°C
MHz
Maximum Duty Cycle Switching 90 94 %
Minimum Duty Cycle Pulse skipping 0 %
Typical Operating Characteristics
(V
IN
= 3.3V, C
RES
= 10µF, MAX1583Y, 4 LEDs in a 2 x 2 array, TA = +25°C, unless otherwise noted.)
EFFICIENCY vs. INPUT VOLTAGE
(MOVIE MODE)
MAX1583 toc01
INPUT VOLTAGE (V)
EFFICIENCY (%)
3.93.63.3
10
20
30
40
50
60
70
80
90
0
3.0 4.2
A: MAX1583X
B: MAX1583Y
C: MAX1583Z
I
LOAD
= 30mA
C
B
A
MAXIMUM BOOST OUTPUT CURRENT
vs. INPUT VOLTAGE (MAX1583X)
MAX1583 toc02
VIN (V)
I
OUT
(mA)
5.04.54.03.53.0
100
200
300
400
500
600
700
0
2.5 5.5
A
B
C
D
A: 1 LED
B: 2 LEDs
C: 3 LEDs
D: 4 LEDs
MAXIMUM BOOST OUTPUT CURRENT
vs. INPUT VOLTAGE
(MAX1583Y)
MAX1583 toc03
V
IN
(V)
I
OUT
(mA)
5.04.54.03.53.0
100
200
300
400
500
600
0
2.5 5.5
A
B
C
D
A: 1 LED
B: 2 LEDs
C: 3 LEDs
D: 4 LEDs
MIN TYP MAX
0.01
2.25
0.01
0.75 1.25
Page 4
MAX1583
White LED Camera-Flash
Boost Converter
4 _______________________________________________________________________________________
STROBE STANDBY-MODE INPUT CURRENT
vs. INPUT VOLTAGE (PRECHARGE DONE)
MAX1583 toc07
INPUT VOLTAGE (V)
INPUT CURRENT (µA)
5.04.54.03.53.0
500
1000
1500
2000
2500
0
2.5 5.5
MAX1583Z
MAX1583Y
MAX1583X
SWITCHING WAVEFORMS IN
MOVIE MODE
MAX1583 toc08
4µs/div
V
OUT
AC-COUPLED
200mA/div
50mV/div
5V/div
V
LX
I
L
SWITCHING WAVEFORMS IN
STANDBY MODE
MAX1583 toc10
4ms/div
V
OUT
AC-COUPLED
500mA/div
500mV/div
10V/div
V
LX
I
L
Typical Operating Characteristics (continued)
(V
IN
= 3.3V, C
RES
= 10µF, MAX1583Y, 4 LEDs in a 2 x 2 array, TA = +25°C, unless otherwise noted.)
MAXIMUM BOOST OUTPUT CURRENT
vs. INPUT VOLTAGE
(MAX1583Z)
MAX1583 toc04
VIN (V)
I
OUT
(mA)
5.04.54.03.53.0
50
100
150
200
250
300
350
400
450
0
2.5 5.5
A
C
B
D
A: 1 LED
B: 2 LEDs
C: 3 LEDs
D: 4 LEDs
STROBE-MODE LED CURRENT
vs. STB RESISTANCE
MAX1583 toc05
R
STB
(kΩ)
LED CURRENT (mA)
10864
50
100
150
200
250
300
350
0
212
MOVIE-MODE LED CURRENT
vs. MOV RESISTANCE
MAX1583 toc06
R
MOV
(kΩ)
LED CURRENT (mA)
10864
20
40
60
80
100
120
0
02 12
SWITCHING WAVEFORMS DURING
PRECHARGE MODE
MAX1583 toc09
1µs/div
V
OUT
AC-COUPLED
500mA/div
500mV/div
10V/div
V
LX
I
L
Page 5
MAX1583
White LED Camera-Flash
Boost Converter
_______________________________________________________________________________________ 5
PRECHARGE-CYCLE
WAVEFORMS (MAX1583X)
MAX1583 toc12
500µs/div
V
OUT
1A/div
5V/div
10V/div
I
IN
V
POK
PRECHARGE-CYCLE
WAVEFORMS (MAX1583Y)
MAX1583 toc13
500µs/div
V
OUT
500mA/div
5V/div
10V/div
I
IN
V
POK
PRECHARGE-CYCLE
WAVEFORMS (MAX1583Z)
MAX1583 toc14
500µs/div
V
OUT
200mA/div
5V/div
10V/div
I
IN
V
POK
STROBE-PULSE WAVEFORMS
(MAX1583X)
MAX1583 toc15
10ms/div
V
OUT
1A/div
10V/div
100mA/div
I
IN
I
LED
STROBE-PULSE WAVEFORMS
(MAX1583Y)
MAX1583 toc16
10ms/div
V
OUT
500mA/div
100mA/div
10V/div
I
IN
I
LED
C
RES
= 100µF
STROBE-PULSE WAVEFORMS
(MAX1583Z)
MAX1583 toc17
10ms/div
V
OUT
200mA/div
100mA/div
10V/div
I
IN
I
LED
C
RES
= 200µF
SWITCHING WAVEFORMS IN
STROBE MODE
MAX1583 toc11
20µs/div
V
OUT
100mA/div
500mA/div
5V/div
10V/div
I
IN
V
POK
I
LED
Typical Operating Characteristics (continued)
(V
IN
= 3.3V, C
RES
= 10µF, MAX1583Y, 4 LEDs in a 2 x 2 array, TA = +25°C, unless otherwise noted.)
Page 6
MAX1583
White LED Camera-Flash
Boost Converter
6 _______________________________________________________________________________________
PIN
NAME
FUNCTION
1 GND Ground. Connect to exposed paddle.
2 IN Input Voltage Supply. Input voltage range is 2.6V to 5.5V. Bypass IN to GND with a 4.7µF ceramic capacitor.
3 MOV
Movie Current-Set Input. Connect a resistor from MOV to GND to set the LED current for movie-mode
operation. R
MOV
= 60 / I
LED
(where R
MOV
> 600kΩ).
4 STB
Strobe Current-Set Input. Connect a resistor from STB to GND to set the LED current for strobe-mode
operation. R
STB
= 600 / I
LED
(where R
STB
> 2kΩ).
5POKP ow er - O K O utp ut. P ul l ed to GN D d ur i ng p r echar g e m od e. P OK g oes hi g h i m p ed ance once V
OU T
r eaches 24V .
6 EN1 Enable 1. EN1 and EN2 are digital inputs that determine the operational mode of the MAX1583. See Table 1.
7 EN2 Enable 2. EN1 and EN2 are digital inputs that determine the operational mode of the MAX1583. See Table 1.
8 OUT
Output-Voltage Sense Input. The boost-converter circuit in the MAX1583 is disabled once V
OUT
is greater
than 24V. When V
OUT
falls below 23.5V, the converter is enabled.
9 LED
LED Return Input. Connect to the cathode of the series LEDs. Regulates to 0.6V in movie mode. LED is high
impedance during shutdown and precharge mode.
10 LX
Inductor Connection. Drain of the internal power MOSFET. Connect to the switched side of the inductor. LX is
high impedance during shutdown.
— EP Exposed Paddle. Connect to the circuit ground plane.
Pin Description
Functional Diagram
MAX1583
CURRENT REGULATOR
ENABLE
DECODE
BOOST-CONVERTER
CONTROL
CURRENT-LIMIT
THRESHOLD
CURRENT-LIMIT
COMPARATOR
THERMAL
LIMIT
POK CIRCUITRY
REFERENCE
POK
COMPARATOR
MOVIE-MODE
FEEDBACK
COMPARATOR
LX
POK
OUT
LED
STB
MOV
EN2
EN1
IN
GND
N
N
N
Page 7
MAX1583
White LED Camera-Flash
Boost Converter
_______________________________________________________________________________________ 7
Detailed Description
The MAX1583 provides power and control for up to five
white LEDs. The MAX1583 consists of a gated oscillator, a 24V boost converter, and an LED current-regulation circuit, and operates from 2.6V to 5.5V input supply
voltages. The MAX1583 operates in one of four userselectable modes (Table 1). The precharge mode
charges the output capacitor to 24V for quick transients
to strobe mode. The POK output indicates the output
has reached its regulation value of 24V and is ready for
a strobe pulse. In movie mode, the LED current is regulated at a user-selectable level for constant lighting.
Strobe mode regulates the LED current to a user-selectable high-intensity level for still picture use. When the
MAX1583 is not in use, it can be put in shutdown mode,
reducing the input current to 0.01µA (typ).
Boost Converter
The heart of the MAX1583 is a gated oscillator boost
converter that is used to supply the LED current. The
boost converter is active when the feedback input voltage (V
LED
) is below the regulation threshold (0.6V) and
V
OUT
is below the overvoltage-lockout threshold (24V).
During switching cycles, the 94% (typ) duty cycle,
1MHz oscillator switches an internal power MOSFET.
On the rising edge of each clock cycle, the MOSFET is
turned on, ramping up current and storing energy in the
external inductor. On the falling edge of the oscillator,
the MOSFET is turned off, allowing the energy stored in
the inductor to be transferred to the output. Under normal operation, the MOSFET turns on or off only at the
beginning or end of the oscillator cycle. This ensures
there are no short-duration pulses. Exceeding the current limit or thermal limit, or pulling EN1 and EN2 low,
immediately turns the MOSFET off.
Current Regulator
The MAX1583 controls the brightness by regulating the
current through the external LEDs to a user-selectable
level. In movie mode, the current into LED is regulated
to 100 times the current set by the MOV resistor, R
MOV
.
In strobe mode, the current into LED is regulated to
1000 times the current set by the STB resistor, R
STB
.
Precharge Mode
Drive EN1 low and EN2 high to enable precharge
mode. In this mode, the boost converter switches continuously until the output capacitor is charged to 24V.
Once V
OUT
reaches 24V, POK goes high impedance
and the MAX1583 does not switch again until V
OUT
falls
below 23.5V. This results in a 500mV ripple on the output during this mode. LED is high impedance in
precharge mode; therefore, the external LEDs are off.
POK Output
An open-drain, power-OK output (POK) is low until
V
OUT
reaches 24V. Once the threshold is reached,
POK is latched in a high-impedance state. The latch is
reset in strobe, precharge, or movie mode.
Strobe Mode
Drive EN1 and EN2 high to enable strobe mode. In this
mode, the boost converter switches continuously to
supply maximum current for the LEDs unless limited by
overvoltage lockout. The current through the LEDs is
regulated to 1000 times the current set by the STB
resistor. See the Adjusting the LED Current section for
details on setting the strobe-mode current. The time
duration of the strobe mode must be set using external
circuitry or software.
Movie Mode
Drive EN1 high and EN2 low to enable movie mode.
In this mode, the boost converter switches as necessary to maintain V
LED
at 0.6V, and the current regulator
regulates the current through LED to 100 times the current set by the MOV resistor. See the Adjusting the LED
Current section for details on setting the moviemode current.
Shutdown Mode
Drive EN1 and EN2 low to place the MAX1583 into a
low-power shutdown mode. LED is high impedance
during shutdown, eliminating the DC conduction path
that exists in the typical boost topology.
EN1 EN2 MODE
0 0 Shutdown
0 1 Precharge
1 0 Movie
1 1 Strobe
Table 1. Enable Inputs
Page 8
MAX1583
White LED Camera-Flash
Boost Converter
8 _______________________________________________________________________________________
Design Procedure
Adjusting the LED Current
The LED current in the strobe and movie modes is programmable using external resistors. To set the LED current during strobe mode, connect a resistor (R
STB
) from
STB to GND. V
STB
is regulated to 0.6V and the current
sourced by STB is mirrored through LED with a gain of
1000. R
STB
is calculated as:
R
STB
= 600 / I
LED(DESIRED)
To set the LED current during movie mode, connect a
resistor (R
MOV
) from MOV to GND. V
MOV
is regulated
to 0.6V and the current sourced by MOV is mirrored
through LED with a gain of 100. R
MOV
is calculated as:
R
MOV
= 60 / I
LED(DESIRED)
Reservoir Capacitance vs. Current Limit
During strobe mode, the current demands on the boost
converter to maintain the desired LED strobe current
may cause the MAX1583 to reach the preset current
limit. The MAX1583 is available with three factory-preset current limits: 250mA, 500mA, and 1A. If the current
limit is reached, the internal MOSFET terminates its ON
cycle early, causing the output current to drop. See the
Typical Operating Characteristics for the Maximum
Boost I
OUT
vs. VINfor each current limit. If the required
strobe current exceeds the maximum boost I
OUT
, con-
nect a reservoir capacitor from OUT to GND to provide
the extra LED current. The value of this capacitor is calculated as:
where:
I
LED
is the desired strobe current,
I
BOOST
is the maximum current from the boost convert-
er obtained from the Typical Operating Characteristics,
t
STROBE
is the time duration of the strobe,
n is the number of LEDs, and
VFis the forward voltage of the LEDs.
For example, assume a minimum input voltage of 3.2V
with the MAX1583Y (500mA current limit). The required
strobe current is 100mA for 30ms through two series
LEDs with a 4V forward voltage. The reservoir capacitor
is determined as follows:
I
BOOST
= 75mA from the Typical Operating
Characteristics.
C
mA mA ms
VV
mA ms
V
F
RES
=
−×
−×
=
×
=µ
()
()
100 75 30
24 2 4
25 30
16
47
C
II t
VnV
RES
LED BOOST STROBE
F
=
−×
−×
()
()24
MAX1583X
V
IN
2.6V TO 5.5V
LED
EN2
EN1
POK
GND
IN
LX
OUT
STB
MOV
R3
100kΩ
C1
22µF
C3
0.1µF
R1
6.04kΩ
1%
R2
3.01kΩ
1%
L1
4.7µH
2
1
5
6
7
4
3
MODE CONTROL
POWER-OK
10
8
9
D2, D3, D4
WHITE LEDs
C2
10µF
D1
Figure 1. Typical Application Circuit
Page 9
MAX1583
White LED Camera-Flash
Boost Converter
_______________________________________________________________________________________ 9
Input-Capacitor Selection
Bypass the input to GND using a ceramic capacitor.
Place the capacitor as close to the IC as possible. The
exact value of the input capacitor is not critical. The
typical value for the input capacitor is 22µF when using
the MAX1583X, 10µF when using the MAX1583Y, and
4µF when using the MAX1583Z. Using these values
reduces the input ripple to an acceptable level.
Output-Capacitor Selection
The output capacitance required depends on the
required LED current and the time duration of the pulse
in strobe mode. See the Reservoir Capacitance vs.
Current Limit section for details on determining this
capacitance value. Note that the output capacitor must
be rated for 25V or greater. In addition to the reservoir
capacitor, bypass the output with a 0.1µF, 25V capacitor from OUT to LED.
Inductor Selection
The recommended inductor values for use with the
MAX1583 range from 4.7µH to 47µH. With input voltages near 5V, a larger value of inductance can be
more efficient. To prevent core saturation, ensure that
the inductor-saturation current rating exceeds the current limit of the MAX1583 (250mA, 500mA, or 1A).
Schottky-Diode Selection
The MAX1583 requires a high-speed rectification diode
(D1) for optimum performance. A Schottky diode is recommended due to its fast recovery time and low forward-voltage drop. Ensure that the diode’s average
and peak current ratings exceed the average output
current and the current limit (I
LIMIT
) of the MAX1583
(250mA, 500mA, or 1A). In addition, the diode’s reverse
breakdown voltage must exceed V
OUT
. The RMS diode
current is calculated as:
Applications Information
PC Board Layout
Due to fast-switching waveforms and high-current
paths, careful PC board layout is required. An evaluation kit (MAX1583EVKIT) is available as an example to
speed design. When laying out a board, minimize trace
lengths between the IC and the inductor, the diode, the
input capacitor, and the output capacitor. Keep traces
short, direct, and wide. The IN bypass capacitor should
be placed as close to the IC as possible. GND should
be connected directly to the exposed paddle underneath the IC. The ground connections of C
IN
and C
OUT
should be as close together as possible. The traces
from IN to the inductor and from the Schottky diode to
the LEDs can be longer.
Chip Information
TRANSISTOR COUNT: 1395
PROCESS: BiCMOS
III
DIODE RMS LED MAX LIMIT() ()
≅×
Page 10
MAX1583
White LED Camera-Flash
Boost Converter
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages
.)
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages
.)
6, 8, &10L, DFN THIN.EPS
PROPRIETARY INFORMATION
TITLE:
APPROVAL
DOCUMENT CONTROL NO. REV.
2
1
PACKAGE OUTLINE, 6, 8 & 10L,
TDFN, EXPOSED PAD, 3x3x0.80 mm
21-0137 D
L
C
L
C
SEMICONDUCTOR
DALLAS
A2
A
PIN 1
INDEX
AREA
D
E
A1
D2
b
E2
[(N/2)-1] x e
REF.
e
k
1N1
L
e
L
A
L
PIN 1 ID
C0.35
DETAIL A
e
NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY
DOCUMENT CONTROL NO.APPROVAL
TITLE:
PROPRIETARY INFORMATION
REV.
2
2
COMMON DIMENSIONS
SYMBOL
MIN. MAX.
A
0.70 0.80
D
2.90 3.10
E
2.90 3.10
A1
0.00 0.05
L
0.20 0.40
PKG. CODE
6
N
T633-1 1.50±0.10D22.30±0.10
E2
0.95 BSCeMO229 / WEEA
JEDEC SPEC
0.40±0.05b1.90 REF
[(N/2)-1] x e
1.50±0.10
MO229 / WEEC
1.95 REF0.30±0.05
0.65 BSC
2.30±0.10T833-1 8
PACKAGE VARIATIONS
21-0137
0.25±0.05 2.00 REFMO229 / WEED-30.50 BSC1.50±0.10 2.30±0.1010T1033-1
0.25 MIN.
k
A2 0.20 REF.
D
SEMICONDUCTOR
DALLAS
PACKAGE OUTLINE, 6, 8 & 10L,
TDFN, EXPOSED PAD, 3x3x0.80 mm
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