General Description
The MAX16803 current regulator operates from a 6.5V
to 40V input-voltage range and delivers up to a total of
350mA to one or more strings of high-brightness LEDs
(HB LEDs). The output current of the MAX16803 is
adjusted by using an external current-sense resistor in
series with the LEDs. A dimming input allows widerange “pulsed” PWM operation. Wave-shaping circuitry
reduces EMI. The differential current-sense input
increases noise immunity. The MAX16803 is well suited
for applications requiring high-voltage input and is able
to withstand automotive load-dump events up to 40V.
An on-board pass element minimizes external components while providing ±3.5% output-current accuracy.
Additional features include a 5V regulated output and
short-circuit and thermal protection.
The MAX16803 is available in a thermally enhanced,
5mm x 5mm, 16-pin TQFN package and is specified
over the automotive -40°C to +125°C temperature range.
Applications
Automotive Interior: Map, Courtesy, and Cluster
Lighting
Automotive Exterior: Rear Combination Lights (RCLs)
Emergency Vehicle Warning Lights
Navigation and Marine Indicators
General Lighting
Signage, Gasoline Canopies, Beacons
Features
♦ +6.5V to +40V Operating Range
♦ Adjustable LED Current (35mA to 350mA)
♦ ±3.5% LED Current Accuracy
♦ High-Voltage DIM Pin for Dimming Interface
♦ Integrated Pass Element with Low-Dropout
Voltage (0.5V typ)
♦ +5V Regulated Output with 4mA Source
Capability
♦ Parallel Operation for LED Current > 350mA
♦ Differential LED Current Sense
♦ Low Shutdown Supply Current (12µA typ)
♦ Low 204mV Current-Sense Reference Reduces
Power Losses
♦ Wave-Shaped Edges Reduce Radiated EMI During
PWM Dimming
♦ Thermal Shutdown
♦ Output Short-Circuit Protection
♦ Available in Small, Thermally Enhanced,
5mm x 5mm, 16-Pin TQFN Package
♦ -40°C to +125°C Operating Temperature Range
MAX16803
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
________________________________________________________________ Maxim Integrated Products 1
15
16
+
14
13
6
5
7
IN
N.C.
8
OUT
V5
CS+
GND
12
N.C.
4
12 11 9
EN
OUT
N.C.
N.C.
N.C.
N.C.
MAX16803
IN CS-
3
10
DIM
TQFN
TOP VIEW
Pin Configuration
Ordering Information
MAX16803
IN
OUT
V5
LEDs
R
SENSE
0.1µF
+6.5V TO +40V
+5V REG
CS+
0.1µF
CS-
DIM
PWM DIMMING
GND
EN
Simplified Diagram
19-0532; Rev 0; 5/06
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.
+Denotes lead-free package.
*EP = Exposed pad.
PART
TEMP RANGE
PIN-
PKG
CODE
MAX16803ATE+
T1655-3
PACKAGE
-40°C to +125°C 16 TQFN-EP*
MAX16803
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VIN= V
EN
= +12V, CV5= 0.1µF to GND, IV5= 0, V
CS-
= 0V, V
DIM
= +4V, connect R
SENSE
= 0.58Ω between CS+ and CS- (Note 1).
T
J
= -40°C to +125°C, unless otherwise noted. Typical values are at TA= +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, OUT, DIM, and EN to GND ...............................-0.3V to +45V
CS+, CS-, V5 to GND ...............................................-0.3V to +6V
OUT Short Circuited to GND Duration
(at V
IN
= +16V) ........................................................60 minutes
Maximum Current Into Any Pin (except IN and OUT).........±20mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin TQFN (derate 33.3mW/
°
C above +70°C) ......2666.7mW
Operating Junction Temperature Range...........-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage Range V
IN
(Note 2) 6.5
V
Ground Current I
G
I
LOAD
= 350mA 1.4 3 mA
Shutdown Supply Current I
SHDN
EN ≤ 0.6V 12 40 µA
Guaranteed Output Current I
OUT
R
SENSE
= 0.55Ω
mA
Output Current Accuracy 35mA < I
OUT
< 350mA
%
I
OUT
= 350mA (current pulsed),
12V < V
IN
< 40V
0.5 1.2
Dropout Voltage (Note 3) ∆VDO
I
OUT
= 350mA (current pulsed),
6.5V < V
IN
< 12V
0.5 1.5
V
Current rising, DIM rising to 4V 17
Output Current Slew Rate
Current falling, DIM falling to 0.6V 17
mA/µs
Short-Circuit Current V
OUT
= 0V, VIN = 12V
mA
LOGIC INPUT
EN Input Current I
EN
nA
EN Input Voltage High V
IH
2.8 V
EN Input Voltage Low V
IL
0.6 V
Turn–On Time t
ON
EN rising edge to 90% of OUT 80 µs
CURRENT SENSE (Note 4)
Regulated R
SENSE
Voltage V
RSNS
V
SENSE
= V
CS+
- V
CS-
mV
CS- Voltage Range
V
Input Current (CS+) V
CS+
= 220mV
µA
Input Current (CS-) V
CS+
= 220mV -84 µA
DIM Input Current 1µA
DIM Input Voltage High V
IH
4V
DIM Input Voltage Low V
IL
0.6 V
Turn-On Time t
ON
After DIM rising to 4V (Note 5) 52 µs
Turn-Off Time t
OFF
After DIM falling to 0.6V (Note 5) 38 µs
350
±3.5
40.0
400 600 800
196 203 210
-0.3 +4.1
100
+14
MAX16803
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
_______________________________________________________________________________________ 3
Note 1: All devices 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design.
Note 2: Resistors were added from OUT to CS+ to aid with the power dissipation during testing.
Note 3: Dropout is measured as follows:
Connect R
O
= 27Ω from OUT to CS+. Connect R
SENSE
= 0.58Ω from CS+ to CS-. Set VIN= +12V (record V
OUT
as V
OUT1
).
Reduce VINuntil V
OUT
= 0.97 x V
OUT1
(record as V
IN2
and V
OUT2
). ∆VDO= V
IN2
- V
OUT2
.
Note 4: I
V5
= 0mA.
Note 5: t
ON
time includes the delay and the rise time needed for I
OUT
to reach 90% of its final value. t
OFF
time is the time needed
for I
OUT
to drop below 10%. See the Typical Operating Characteristics. tONand t
OFF
are tested with 13Ω from OUT to CST.
Note 6: Current regulation varies with V5 load (see the Typical Operating Characteristics).
Note 7: Thermal shutdown does not function if the output of the 5V reference is shorted to ground.
ELECTRICAL CHARACTERISTICS (continued)
(VIN= V
EN
= +12V, CV5= 0.1µF to GND, IV5= 0, V
CS-
= 0V, V
DIM
= +4V, connect R
SENSE
= 0.58Ω between CS+ and CS- (Note 1).
T
J
= -40°C to +125°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
THERMAL OVERLOAD
Thermal-Shutdown Temperature
°C
Thermal-Shutdown Hysteresis 23 °C
+5V REGULATOR
Output Voltage Regulation V5 (Note 6) 5.0
5.5 V
V5 Short-Circuit Current V5 = 0V (Note 7) 16 mA
Typical Operating Characteristics
(VIN= VEN= +12V, TA= +25°C, unless otherwise noted.)
OUTPUT CURRENT
vs. TEMPERATURE
MAX16803 toc01
TEMPERATURE (°C)
OUTPUT CURRENT (mA)
1109565 80-10 5 20 35 50-25
50
100
150
200
250
300
350
400
450
0
-40 125
I
LOAD
= 350mA
I
LOAD
= 35mA
I
LOAD
= 200mA
I
LOAD
= 100mA
(V
CS+
- V
CS-
) vs. OUTPUT CURRENT
MAX16803 toc02
OUTPUT CURRENT (mA)
(V
CS+
- V
CS-
) (V)
320290230 26080 110 140 170 20050
0.201
0.202
0.203
0.204
0.205
0.206
0.207
0.208
0.209
0.210
0.200
20 350
VIN = 12V
OUTPUT CURRENT
vs. INPUT VOLTAGE
MAX16803 toc03
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
35305 10 15 20 25
50
100
150
200
250
300
350
400
0
040
+155
5.27
MAX16803
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
4 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VIN= VEN= +12V, TA= +25°C, unless otherwise noted.)
DROPOUT VOLTAGE
vs. TEMPERATURE
MAX16803 toc04
TEMPERATURE (°C)
DROPOUT VOLTAGE (V)
1109565 80-10 5 20 35 50-25
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
-40 125
I
LOAD
= 350mA
SHUTDOWN CURRENT
vs. TEMPERATURE
MAX16803 toc05
TEMPERATURE (°C)
SHUTDOWN CURRENT (µA)
1109580655035205-10-25
5
10
15
20
25
30
35
0
-40 125
VIN = 40V
VIN = 20V
VIN = 12V
VIN = 6.5V
+5V REGULATOR OUTPUT
vs. TEMPERATURE
MAX16803 toc06
TEMPERATURE (°C)
5V REGULATOR OUTPUT (V)
1109580655035205-10-25
5.1
5.2
5.3
5.4
5.5
5.0
-40 125
I
LOAD
= 1mA
NO LOAD
I
LOAD
= 5mA
(V
CS+
- V
CS-
) vs. I
V5
MAX16803 toc07
IV5 (mA)
(V
CS+
- V
CS-
) (V)
764 52 31
0.199
0.200
0.201
0.202
0.203
0.204
0.205
0.206
0.207
0.208
0.209
0.210
0.198
08
I
LOAD
= 410mA
+5V REGULATOR OUTPUT vs. V
IN
MAX16803 toc08
V
IN
(V)
5V REGULATOR OUTPUT (V)
353025201510
5.15
5.20
5.25
5.30
5.10
540
LOAD = 1mA
NO LOAD
LOAD = 5mA
200Hz DIMMED OPERATION
MAX16803 toc09
20µs/div
V
DIM
2V/div
I
LOAD
200mA/div
0A
I
LOAD
= 350mA
V
IN
= VEN = 12V
DIM PULSED AT
200Hz (1%
DUTY CYCLE)
0V
200Hz DIMMED OPERATION (EXPANDED)
MAX16803 toc10
20µs/div
V
DIM
2V/div
I
LOAD
200mA/div
0A
I
LOAD
= 350mA
V
IN
= VEN = 12V
DIM PULSED AT
200Hz (50%
DUTY CYCLE)
0V
200Hz DIMMED OPERATION (EXPANDED)
MAX16803 toc11
20µs/div
V
DIM
2V/div
I
LOAD
200mA/div
0A
I
LOAD
= 350mA
V
IN
= VEN = 12V
DIM PULSED AT
200Hz (50%
DUTY CYCLE)
0V
MAX16803
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
_______________________________________________________________________________________ 5
I
DIM
vs. V
DIM
MAX16803 toc13
V
DIM
(V)
I
DIM
(µA)
1412108642
50
100
150
200
250
300
0
016
V
SNSE
vs. V
CS-
MAX16803 toc12
V
CS-
(V)
V
SNSE
(mV)
4.54.03.53.02.5
201
202
203
204
205
200
2.0 5.0
VIN = 12V
I
LOAD
= 350mA
Typical Operating Characteristics (continued)
(VIN= VEN= +12V, TA= +25°C, unless otherwise noted.)
Pin Description
PIN NAME FUNCTION
1, 16 OUT Current-Regulated Output. Connect pin 1 to pin 16.
2, 3 IN Positive Input Supply. Bypass IN with a 0.1µF (min) capacitor to GND. Connect pin 2 to pin 3.
4–8, 14 N.C. Not Internally Connected
9 CS+
Positive Input of the Internal Differential Amplifier. Connect the current-sense resistor between CS+
and CS- to program the output current level.
10 CS-
Negative Input of the Internal Differential Amplifier. Connect the current-sense resistor between
CS- and CS+ to program the output current level.
11 V5 +5V Regulated Output. Connect a 0.1µF capacitor from V5 to GND.
12 GND Ground
13 DIM
Pulsed Dimming Input. Drive DIM low to disable the output. Drive DIM high to enable the output.
Must not be left unconnected.
15 EN Enable Input. Drive EN high to enable the output.
—EP
Exposed Pad. Connect to the ground plane for effective power dissipation. Do not use as the only
ground connection.
MAX16803
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
6 _______________________________________________________________________________________
Functional Diagram
MAX16803
ENABLE
EN
REFERENCE
GENERATOR
REGULATOR
IN
V5
DIFFERENTIAL
SENSE
AMPLIFIER
THERMAL
SHUTDOWN
DIM
I_
REG
IN
OUT
CS+
CS-
Detailed Description
The MAX16803 is a high-current regulator capable of
providing up to a total of 350mA of current to one or
more strings of HB LEDs. A wide operating input voltage range of +6.5V to +40V makes the MAX16803
ideal for automotive applications. A +5V regulated output provides up to 4mA of current to power external circuitry. In addition, the MAX16803 features thermal and
output short-circuit protection. The wide operating voltage range helps protect the MAX16803 against large
transients such as those found in load-dump situations
up to 40V.
The MAX16803 uses a feedback loop to control the output current. The differential voltage across the sense
resistor is compared to a fixed reference voltage, and
the error is amplified to serve as the drive to the internal
power series pass device (see the Functional
Diagram). The regulation point is factory-set at (V
CS+
-
V
CS-
) = 203mV ±3.5%. The regulated current is user
defined by the value of R
SENSE
.
The MAX16803 is a current controller internally optimized for driving the impedance range expected from
one or more HB LEDs.
+5V Regulator
The MAX16803 includes a fixed +5V output regulator
that delivers up to 4mA of load current throughout the
+6.5V to +40V input voltage range. Connect a 0.1µF
compensation capacitor from V5 to ground. Shorting
V5 to ground disables the thermal shutdown. When EN
is low, V5 is off. V5 stays on during PWM dimming.
Thermal Protection
The MAX16803 enters a thermal-shutdown mode in the
event of overheating. This typically occurs in overload or
output short-circuit conditions. If the junction temperature exceeds T
J
= +155°C (typ), the internal thermal-protection circuitry turns off the series pass device. The
MAX16803 recovers from thermal-shutdown mode once
the junction temperature drops by 23°C (typ). The part
therefore protects itself by thermally cycling in the event
of a short-circuit or overload condition.
Applications Information
Programming the LED Current
The MAX16803 uses a sense resistor across CS+ and
CS- to set the LED current. The differential sense amplifier connected across R
SENSE
provides ground-loop
immunity and low-frequency noise rejection. The LED
current is given by
I
LED
= V
SENSE
/ R
SENSE
MAX16803
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
_______________________________________________________________________________________ 7
Input-Voltage Considerations
For proper operation, the minimum input voltage must
always be:
V
IN(MIN)
≥ V
RSENSE(MAX)
+ V
FT(MAX)
+ ∆V
DO(MAX)
where V
FT(MAX)
is the total forward voltage of all series
connected LEDs. The minimum operating voltage of the
device is +6.5V. The device operates below +6.5V; however, output current may not meet the full regulation
specification (see the Typical Operating Characteristics).
Low-Frequency PWM Dimming at the Output
The MAX16803 provides pulsed or chopped current
dimming input (DIM). The other method is to connect
DIM to V5 and EN to IN and pulse EN. Both methods
generate a regulated-amplitude PWM current (variable
duty cycle) that can provide control over the LED
brightness (see Figures 1 and 2).
Paralleling Multiple MAX16803s to Drive
One High-Power LED
For applications that require more than 350mA of LED
current, two or more MAX16803s can be paralleled
(see Figure 3). V
CS_
should not exceed 4.1V.
3
4
2
1
10
9
11
12
56
IN
8
16 15 13
IN
C1
V
IN
N.C.
GND
V5
CS-
C2
D1
R
SENSE
CS+
MAX16803
7
N.C. N.C. N.C.N.C.
OUT EN DIMN.C.
14
OUT
V
DIM
I
LED
Figure 1. Dimming with EN Connected to VINat a Constant
Voltage and DIM Pulsed
3
4
2
1
10
9
11
12
56
IN
8
16 15 13
IN
C1
V
IN
N.C.
GND
V5
CS-
C2
D1
R
SENSE
CS+
MAX16803
7
N.C. N.C. N.C.N.C.
OUT EN DIMN.C.
14
OUT
I
LED
Figure 2. Dimming with DIM Connected to V5, EN Connected
to V
IN
MAX16803
IN
OUT
V5
V5
C1
CS+
C2
R1
CS-
GND
EN
DIM
V5
LEDs
MAX16803
IN
OUT
V5
V5
C3
CS+
C4
R2
CS-
GND
EN
DIM
Figure 3. Paralleling MAX16803s
MAX16803
Two Brightness Levels for
TAIL/STOP Lights
Figure 4 shows PWM dimming operation for the
MAX16803 with an ICM7555 timer. The ICM7555 provides adjustable duty cycle using two external resistors
and a capacitor. In TAIL operation, the output of the
ICM7555 feeds into DIM and lights up the LEDs. The
LED’s brightness depends on the duty cycle of the
ICM7555. When V
STOP
is present, DIM is pulled up to
V
STOP
. The PWM dimming operation is disabled and
the LEDs light up to full brightness. See the ICM7555
data sheet for formulas to calculate the dimming frequency and the duty cycle.
LED Current Thermal Foldback
With a minimum number of external components, the
MAX16803 provides LED current thermal foldback
using a negative temperature coefficient (NTC) thermistor. Figure 5 shows a thermistor connected to V5 and
the CS+ of the MAX16803. As the temperature increases, the voltage drop across R2 increases causing the
LED current to decrease.
I
LED
= [V
SENSE
- [R2 / (R2 + RT)] x V5] / R1
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
8 _______________________________________________________________________________________
IN
EN
DIM
CS-
CS+
OUT
GND
GND
OUT
TRG
DIS
IN
R2
ICM7555
C1
D2
TAIL
STOP
V5
R
SENSE
TH
MAX16803
C2
+5V REG
D1
D4
D3
R1
LEDs
R3
C3
Figure 4. PWM Dimming Operation with ICM7555 Timer
IN
EN
DIM
CS-
CS+
OUT
GND
R1
LEDs
C1
V
IN
V5
R2
RT
PWM DIMMING
MAX16803
C2
Figure 5. LED Current Thermal Foldback with an NTC Thermistor
Other Applications
The application circuit in Figure 6 implements a twolevel brightness current for TAIL/STOP lights. In TAIL
operation, Q1 is off and the R1 sets the output current.
In STOP operation, Q1 turns on and the output current
is set by a parallel combination of R1 and R2.
Figure 7 shows an application circuit with the
MAX16803 using a single BJT to provide high output
current. For proper operation:
V
IN(MIN)
> V
CESAT(MAX)
+ V
FT(MAX)
+ V
RSENSE
where V
CESAT(MAX)
is the maximum saturation voltage
of the external BJT.
MAX16803
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
_______________________________________________________________________________________ 9
IN
EN
V5
DIM
CS-
CS+
OUT
GND
R2
C1
TAIL
STOP
V5
R1
MAX16803
C2
LEDs
Q1
Figure 6. Two Brightness Level with Current Level Switch for Tail/Stop Lights
IN
EN
DIM
CS-
CS+
OUT
GND
R
SENSE
LEDs
Q1
C1
V
IN
V5
PWM DIMMING
MAX16803
C2
Figure 7. Increased LED Current (Amper Range) with a Single BJT
MAX16803
Multichannel HB LED Driver
Figure 8 shows an array of MAX16803s with independent
DIM control. The MAX5094C, a current-mode PWM controller, provides the input power to each LED driver preregulated voltage to multiple MAX16803 drivers.
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
10 ______________________________________________________________________________________
Chip Information
PROCESS: BiCMOS
3
4
2
1
10
9
11
12
56
IN
8
16 15 13
IN
C1
V
IN
N.C.
GND
V5
CS-
C2
D1
R
SENSE
CS+
MAX16803
7
N.C. N.C. N.C.N.C.
OUT EN DIMN.C.
14
OUT
V
DIM
Typical Operating Circuit
REF
C3
R3
C6
R4
C4
L1
COMP
FB
CS
GND
V
CC
V
IN
CT/R
T
CT
OUT
MAX5094C
MAX16803
U2
C
REF
C2
D1
C
COMP
R
COMP
IN
EN
DIM
R2
CS-
CS+
OUT
GND
V5
R5
C7
LEDs
Q1
C10
MAX16803
U4
IN
EN
DIM
CS-
CS+
OUT
GND
V5
R7
C11
LEDs
C8
MAX16803
U3
IN
EN
DIM
CS-
CS+
OUT
GND
V5
R6
C9
LEDs
Figure 8. Multichannel HB LED Driver for LCD Backlight
MAX16803
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
______________________________________________________________________________________ 11
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
.)
QFN THIN.EPS
D2
(ND-1) X e
e
D
C
PIN # 1
I.D.
(NE-1) X e
E/2
E
0.08 C
0.10 C
A
A1
A3
DETAIL A
E2/2
E2
0.10 M C A B
PIN # 1 I.D.
b
0.35x45°
D/2
D2/2
L
C
L
C
e e
L
CC
L
k
L
L
DETAIL B
L
L1
e
AAAAA
MARKING
I
1
2
21-0140
PACKAGE OUTLINE,
16, 20, 28, 32, 40L THIN QFN, 5x5x0.8mm
-DRAWING NOT TO SCALE-
L
e/2
MAX16803
High-Voltage, 350mA, High-Brightness LED
Driver with PWM Dimming and 5V Regulator
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.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2006 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.
Heaney
Package Information (continued)
(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
.)
COMMON DIMENSIONS
MAX.
EXPOSED PAD VARIATIONS
D2
NOM.MIN.
MIN.
E2
NOM. MAX.
NE
ND
PKG.
CODES
1. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994.
2. ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES.
3. N IS THE TOTAL NUMBER OF TERMINALS.
4. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL
CONFORM TO JESD 95-1 SPP-012. DETAILS OF TERMINAL #1 IDENTIFIER ARE
OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE INDICATED. THE TERMINAL #1
IDENTIFIER MAY BE EITHER A MOLD OR MARKED FEATURE.
5. DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN
0.25 mm AND 0.30 mm FROM TERMINAL TIP.
6. ND AND NE REFER TO THE NUMBER OF TERMINALS ON EACH D AND E SIDE RESPECTIVELY.
7. DEPOPULATION IS POSSIBLE IN A SYMMETRICAL FASHION.
8. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS.
9. DRAWING CONFORMS TO JEDEC MO220, EXCEPT EXPOSED PAD DIMENSION FOR
T2855-3 AND T2855-6.
NOTES:
SYMBOL
PKG.
N
L1
e
E
D
b
A3
A
A1
k
10. WARPAGE SHALL NOT EXCEED 0.10 mm.
JEDEC
0.70 0.800.75
4.90
4.90
0.25
0.250--
4
WHHB
4
16
0.350.30
5.10
5.105.00
0.80 BSC.
5.00
0.05
0.20 REF.
0.02
MIN. MAX.NOM.
16L 5x5
L
0.30 0.500.40
---
---
WHHC
20
5
5
5.00
5.00
0.30
0.55
0.65 BSC.
0.45
0.25
4.90
4.90
0.25
0.65
--
5.10
5.10
0.35
20L 5x5
0.20 REF.
0.75
0.02
NOM.
0
0.70
MIN.
0.05
0.80
MAX.
---
WHHD-1
28
7
7
5.00
5.00
0.25
0.55
0.50 BSC.
0.45
0.25
4.90
4.90
0.20
0.65
--
5.10
5.10
0.30
28L 5x5
0.20 REF.
0.75
0.02
NOM.
0
0.70
MIN.
0.05
0.80
MAX.
---
WHHD-2
32
8
8
5.00
5.00
0.40
0.50 BSC.
0.30
0.25
4.90
4.90
0.50
--
5.10
5.10
32L 5x5
0.20 REF.
0.75
0.02
NOM.
0
0.70
MIN.
0.05
0.80
MAX.
0.20 0.25 0.30
DOWN
BONDS
ALLOWED
YES3.103.00 3.203.103.00 3.20T2055-3
3.103.00 3.203.103.00 3.20
T2055-4
T2855-3 3.15 3.25 3.35 3.15 3.25 3.35
T2855-6
3.15 3.25 3.35 3.15 3.25 3.35
T2855-4 2.60 2.70 2.80 2.60 2.70 2.80
T2855-5 2.60 2.70 2.80 2.60 2.70 2.80
T2855-7 2.60 2.70
2.80
2.60 2.70 2.80
3.20
3.00 3.10T3255-3 3 3.203.00 3.10
3.203.00 3.10T3255-4 3 3.203.00 3.10
NO
NO
NO
NO
YES
YES
YES
YES
3.203.00T1655-3 3.10 3.00 3.10 3.20 NO
NO3.203.103.003.10T1655N-1 3.00 3.20
3.353.15T2055-5 3.25 3.15 3.25 3.35
YES
3.35
3.15
T2855N-1
3.25 3.15 3.25 3.35
NO
3.353.15T2855-8 3.25 3.15 3.25 3.35
YES
3.203.10T3255N-1 3.00
NO
3.203.103.00
L
0.40
0.40
**
**
**
**
**
**
**
**
**
**
**
**
**
**
SEE COMMON DIMENSIONS TABLE
±0.15
11. MARKING IS FOR PACKAGE ORIENTATION REFERENCE ONLY.
I
2
2
21-0140
PACKAGE OUTLINE,
16, 20, 28, 32, 40L THIN QFN, 5x5x0.8mm
-DRAWING NOT TO SCALE-
12. NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY.
3.30T4055-1 3.20 3.40 3.20 3.30 3.40
**
YES
0.050 0.02
0.600.40 0.50
10
-----
0.30
40
10
0.40 0.50
5.10
4.90 5.00
0.25 0.35 0.45
0.40 BSC.
0.15
4.90
0.250.20
5.00 5.10
0.20 REF.
0.70
MIN.
0.75 0.80
NOM.
40L 5x5
MAX.
13. LEAD CENTERLINES TO BE AT TRUE POSITION AS DEFINED BY BASIC DIMENSION "e", ±0.05.
T1655-2
**
YES3.203.103.003.103.00 3.20
T3255-5 YES3.003.103.00
3.20
3.203.10
**
exceptions
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