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HA16341NT/FP, HA16342NT/FP
Redundant Secondary Switching Power Supply Controller
ADE-204-035C (Z) Rev.3 Apr. 2001 Description
The HA16341NT/FP and the HA16342NT/FP are switching regulator control ICs for the off-line converters of redundant power supplies. The HA16342NT/FP is reverse current detection less version of the HA16341NT/FP. The HA16341NT/FP have the functions of current sharing and hot swap control for redundancy. These functions enable high efficiency and high reliability for switching power supplies. Combination the HA16341 with the HA16141 is suitable for the redundant AC to DC converters.
Features
* Secondary-side synchronous rectification control * Main switching controller * Dead-time adjustment for synchronous rectification MOS * Current share function with line resistance compensation * Hot swap power MOS FET control * Remote on/off function, FAIL output function * Synchronized switching with primary side * Soft start function * Maximum duty adjustment * Overcurrent limiting, overcurrent shutdown functions * Reverse current detection (only the HA16341NT/FP) * Light load detection * OVP function * VCC pin UVL function
HA16341NT/FP, HA16342NT/FP
Ordering Information
Type No. HA16341NT HA16342NT HA16341FP HA16342FP FP-26DT Package DP-24TS
Pin Arrangement
HA16341NT, HA16342NT (DP-24TS) CS(+) CS(-) MT CB Cin SGND PGND PG1 FAIL Trig CT SS DB 1 2 3 4 5 6 TAB 7 8 9 10 11 12 24 23 22 21 20 19 TAB 18 17 16 15 14 13 CF(+) CF(-) CFo CFB EIN EOUT PGND PGND MF OUT VCC MR OUT PWM OUT HSP Vref PG1 FAIL Trig CT SS DB (Top view) 8 9 10 11 12 13 (Top view) 19 18 17 16 15 14 MF OUT VCC MR OUT PWM OUT HSP Vref TAB TAB PGND CS(+) CS(-) MT CB Cin SGND PGND HA16341FP, HA16342FP (FP-26DT) 1 2 3 4 5 6 7 26 25 24 23 22 21 20 CF(+) CF(-) CFo CFB EIN EOUT PGND
Rev.1, Jan. 2001, page 2 of 21
HA16341NT/FP, HA16342NT/FP
Pin Functions
Pin No. DP-24TS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 TAB FP-26DT 1 2 3 4 5 6 8 9 10 11 12 13 14 15 16 17 18 19 21 22 23 24 25 26 TAB, 7, 20 Symbol CS(+) CS(-) MT CB Cin SGND PG1 FAIL Trig CT SS DB Vref HSP PWM OUT MR OUT VCC MF OUT EOUT EIN CFB CFo CF(-) CF(+) PGND Pin Name Current sense amp input (+) Current sense amp input (-) Current sense amp output Current bus output Line resistance compensation input Signal ground Remote on/off FAIL output (open-drain) External synchronization input Timing capacitance Soft start Dead band Vref (5 V) Hot swap output PWM output MR output Power supply voltage MF output Error amp output Error amp input Current share feedback output Current share differential amp output Current share differential amp input (-) Current share differential amp input (+) Power ground
Rev.1, Jan. 2001, page 3 of 21
HA16341NT/FP, HA16342NT/FP
Block Diagram
Current share input Error amp.
CS(+)
+ -
OP1
+ CT'
2R
+-
VZ = 1.24V
R
- +
EIN
1.25V
CS(-)
R
+ -
Point B 26dB 19R
CT level compression 2R 2R S Q latch D R Q 2R R
EOUT
VZ = 6.8V R
OP1-2
MT
OCL
+ 0dB -
OP5
R
- 0dB +
OP6
CFB
CB
+
OP3
2R 1.25V 1.25V
-
+
OP4
1k 1k SW2 SW2 on at HSP Hi
CF(+)
-
Cin
+ 6dB OP2 -
R CS(+) E/IN = 95% comp. R S RS-FF latch A PG1 R Q to latch B reset Start-up latch initial: Lo
CF(-)
SGND
S2
+ - + -
OCL
E/IN 1.187V from B 1.25V
- +
-12mV Reverse current comp. (only HA16341) Hi: PWM ON DB generator Start-up latch initial: Hi
CFo
20dB 90k
+ -
Light load detector
TAB
TAB
- +
Hi: 0.7V Lo: 0.5V
PGND
PGND
10k
Dead Band adjust Driver
HSP
Driver
16 pulse delay UVL1
MF OUT
PWM OUT
Driver
VCC
+ -
Vref
UVL2 SS comp.
SS
- +
S1
RS-FF S latch B QR
Vref UVL2 Hi: stop
Driver
MR OUT
Vref 5V 169A
OVP SW1 on: 1.3V SW1 off: 3.4V PG1
+ -
from Trig 7.5V
DB
CT
100k 128.5k
Vref 5V
Trig
- +
2.5V
Exit trigger control Delay S Q latch C R Q RS-FF 939A
+ -
SW1
+ -
PG1
50k Hi: 2.5V Lo: 2.0V FAIL
FAIL
Oscillator
Unit R: C: F
Rev.1, Jan. 2001, page 4 of 21
HA16341NT/FP, HA16342NT/FP
Absolute Maximum Ratings
(Ta = 25C)
Item Supply Voltage DC output current1 Peak output current1 DC output current2 Peak output current2 DC output current3 Peak output current3 DC output current4 DC output current5 DC output current6 DC output current7 Peak output current4 DC output current8 DC output current9 DC output current10 TRIG terminal voltage CT terminal voltage Vref terminal voltage SS terminal voltage EIN terminal voltage EOUT terminal voltage PG1 terminal voltage FAIL terminal voltage PWM OUT terminal voltage MR OUT terminal voltage MF OUT terminal voltage HSP terminal voltage CFB terminal voltage CS(+) terminal voltage CS(-) terminal voltage MT terminal voltage Cin terminal voltage Symbol VCC Io1 Iopeak1 Io2 Iopeak2 Io3 Iopeak3 Io4 Io5 Io6 Io7 Iopeak4 Io8 Io9 Io10 Vtrigmax VCTmax Vrefmax Vssmax VEINmax VEOUTmax VPG1max VFAILmax VoPWMmax VoMRmax VoMFmax VoHSPmax VCFBmax VCS(+)max VCS(-)max VMTmax VCinmax Rating 18 0.1 1.0 0.2 2.0 0.1 1.0 -5 500 20 -5.0 0.5 500 500 6 -1.5 to VCC -0.3 to Vref -0.3 to Vref -0.3 to Vref -0.3 to Vref -0.3 to VCC -0.3 to Vref -0.3 to VCC -0.3 to VCC -0.3 to VCC -0.3 to VCC -0.3 to VCC -0.3 to Vref -0.3 to Vref -0.3 to Vref -0.3 to Vref -0.3 to Vref Unit V A A A A A A mA A mA mA A A A mA V V V V V V V V V V V V V V V V V PWM OUT *1 PWM OUT *2 MF OUT *1 MF OUT *2 MR OUT *1 MR OUT *2 CB OUT CFB OUT FAIL OUT Vref OUT HSP sink MT OUT CFo OUT EOUT sink Note
Notes: 1. VDS = 10 V max. Therefore test condition must be VOH = VCC - 10 V or over , VOL = 10 V or under. 2. VDS = 10 V max. Pulse duration 10 ms
Rev.1, Jan. 2001, page 5 of 21
HA16341NT/FP, HA16342NT/FP
Absolute Maximum Ratings (cont.)
(Ta = 25C)
Item CF(+) terminal voltage CF(-) terminal voltage CFo terminal voltage CB terminal voltage DB terminal voltage Maximum power dissipation Operating temperature Storage temperature Junction temperature Note: Symbol VCF(+)max VCF(-)max VCFomax VCBmax VDBmax PT Topr Tstg Tj Rating -0.3 to Vref -0.3 to Vref -0.3 to Vref -0.3 to Vref -0.3 to Vref 4.17 -40 to +105 -55 to +150 150 Unit V V V V V W C C C 1 Note
1. This is allowable value up to Ta = 25C. Derate by j-a = 30C/W above that temperature. j-a = 30C/W is the case that HA16341NT is mounted on 30% wiring density glass epoxy board (105 mm x 76.2 mm x 1.6 mmt) and HA16341FP is mounted on a board which thermal resistance is 23C/W because of j-pin (SOP) = 7C/W typ.
5.0
Maximum Power Dissipation PT (W)
4.5
4.17
4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5
0.0 -50
-30
-10
10 30 50 70 90 110 Ambient Temperature Ta (C)
130
150
170
Figure 1 Derating Curve
Rev.1, Jan. 2001, page 6 of 21
HA16341NT/FP, HA16342NT/FP
Electrical Characteristics
(Ta = 25C, VCC = 12V, PG1 = 3V, Vtrig = 0V, VCS(+) = 0V, VCin = 0V, CCT = 330pF, GvOP1 = 26dB, GvOP4 = 40dB, RDB = 1.8k) * Current share
Item CB output Hi voltage CB output Lo voltage CFB output Lo voltage CFB output typ voltage OP1 input offset voltage CS(+) input bias current CS(-) input bias current Cin input bias current OP4 input resistance Open loop gain OP1-OP6 Band width OP1-OP6 OCL detector threshold voltage Light load detector threshold Hi voltage Light load detector threshold Lo voltage VthLL hysteresis Reverse current detector threshold Hi voltage Symbol VCBH VCBL VCFBL VCFBtyp VioOP1 IibCS(+) IibCS(-) IibCin Rsin Avo BWCS VthOCL VthHLL VthLLL dVthLL VthRC Min 2.5 1.19 0.75 (70) 59.5 (2.0) (1.0) (0.5) -6 Typ 1.25 -20 0.2 0.2 1.00 80 700 62.5 3.5 2.5 1.0 -12 Max 25 100 1.31 (1) -30 1.0 1.0 1.25 65.5 (5.0) (4.0) (1.5) -18 Unit V mV mV V mV A A A k dB kHz mV mV mV mV mV CS(+) terminal voltage sensing CS(+) terminal voltage sensing CS(+) terminal voltage sensing CS(+) terminal voltage sensing 1 1 1 3 VCS(+) = 0V, VCS(-) = 0V VCS(+) = 0V, VCS(-) = 0V Vcin = 0V 1, 2 1 1 Test Conditions Iosource = 300A VCS(+) = 1V VCS(+) = 0V, RCB = 10k Iosink = 100A, HSP ON VCS(+) = 0V, VCB = 0.1V VCS(+) = 0V, VCB = 0V RfOP4 = 1k, HSP ON 1 Note
Notes: 1. Design spec. 2. Temperature coefficient is 5400ppm/C. 3. Only HA16341NT/FP.
* Hot swap
Item HSP ON threshold voltage HSP charge current HSP output Lo voltage Symbol VthHSP IcHSP VOLHSP Min 1.14 -7 Typ 1.19 -10 0.3 Max 1.23 -13 0.6 Unit V A V Test Conditions 95% typ of reference 1.25V VHSP = 5V, VEIN = 2V VEIN = 1V, Iosink = 50mA Note
Rev.1, Jan. 2001, page 7 of 21
HA16341NT/FP, HA16342NT/FP
Electrical Characteristics (cont.)
(Ta = 25C, VCC = 12V, PG1 = 3V, Vtrig = 0V, VCS(+) = 0V, VCin = 0V, CCT = 330pF, GvOP1 = 26dB, GvOP4 = 40dB, RDB = 1.8k) * Oscillator
Item Typical oscillating frequency Maximum oscillating frequency Typical oscillating temperature stability CT charge current CT discharge current Upper trip point Lower trip point Amplitude Exit trigger Vth Symbol fosctyp foscmax dfosc Ici Icd VthCTH VthCTL dVCT Vthtrig Min 180 400 -135 616 -0.3 Typ 200 5 -169 770 3.4 1.3 2.1 -0.5 Max 220 -203 924 -0.7 Unit kHz kHz % A A V V V V -20C < Ta < 85C 1 20% 20% 2 Test Conditions Note 10%
Notes: 1. Design spec. 2. In case of external trigger control, CCT should be changed from 330 pF to 430 pF. At this synchronous and 430 pF CCT condition VthCTH becomes about 2.9 V.
* Vref
Item Reference voltage Line regulation Load regulation Temperature stability Symbol Vref Vref-line Vref-load dVref Min 4.9 Typ 5.0 5 5 80 Max 5.1 20 20 Unit V mV mV ppm/C Test Conditions Iosource = 1mA Iosource = 1mA 12V < VCC < 18V 0 < Iosource < 3mA -20C < Ta < 85C 1 Note 2%
Note:
1. Design spec.
* UVL
Item Hi threshold voltage Lo threshold voltage Hysteresis Symbol VH VL dVUVL Min 9.5 8.5 0.6 Typ 10.0 9.0 1.0 Max 10.5 9.5 1.4 Unit V V V Test Conditions Note
Rev.1, Jan. 2001, page 8 of 21
HA16341NT/FP, HA16342NT/FP
Electrical Characteristics (cont.)
(Ta = 25C, VCC = 12V, PG1 = 3V, Vtrig = 0V, VCS(+) = 0V, VCin = 0V, CCT = 330pF, GvOP1 = 26dB, GvOP4 = 40dB, RDB = 1.8k) * PG1
Item Symbol Min 2.4 1.9 (37.5) Typ 2.5 2.0 50.0 Max 2.6 2.1 (62.5) Unit V V k 1 Test Conditions Note PG1 threshold Hi voltage VthHPG1 PG1 threshold Lo voltage VthLPG1 Input impedance RinPG1
Note:
1. Design spec.
* FAIL
Item Leak current Output Lo voltage Symbol IleakFAIL VOLFAIL Min Typ Max -10 0.5 Unit A V Test Conditions VFAIL = 5V Iosink = 10mA Note
* Error amp.
Item Input threshold voltage Input bias current Open loop gain Band width EOUT sink current EOUT source current EOUT clamp voltage EOUT Lo voltage Symbol VthEIN IibEIN AvoEA BWEA IosinkEA IosourceEA VOHEA VOLEA Min 1.23 60 (0.7) 0.5 -100 5.8 Typ 1.25 -0.2 80 1.4 5.0 -250 6.8 Max 1.27 -2.0 7.8 1.0 Unit V A dB MHz mA A V V VEIN = 1.5V, EOUT = 1.1V VEIN = 1.0V, EOUT = 5V VEIN = 1.0V VEIN = 1.5V, Iosink = 200A 1 Test Conditions VEOUT = 1.25V VEIN = 2V Note 1.6%
Note:
1. Design spec.
* PWM OUT
Item Output Lo voltage Output Hi voltage Rise time Fall time Maximum duty Minimum duty Symbol VOLPWM VOHPWM trPWM tfPWM Dmax Dmin Min VCC-0.4 20 20 58 Typ 0.2 VCC-0.2 50 50 65 Max 0.4 100 100 72 0 Unit V V ns ns % % Test Conditions Iosink = 100mA Iosource = 100mA CL = 3300pF CL = 3300pF VSS = 4V, VEIN = 1.0V VSS = 4V, VEIN = 1.5V Note
Note:
1. Design spec.
Rev.1, Jan. 2001, page 9 of 21
HA16341NT/FP, HA16342NT/FP
Electrical Characteristics (cont.)
(Ta = 25C, VCC = 12V, PG1 = 3V, Vtrig = 0V, VCS(+) = 0V, VCin = 0V, CCT = 330pF, GvOP1 = 26dB, GvOP4 = 40dB, RDB = 1.8k) * MR OUT
Item Output Lo voltage Output Hi voltage Rise time Fall time Symbol VOLMR VOHMR trMR tfMR Min VCC-0.4 20 20 Typ 0.2 VCC-0.2 50 50 Max 0.4 100 100 Unit V V ns ns Test Conditions Iosink = 100mA Iosource = 100mA CL = 3300pF CL = 3300pF Note
* MF OUT
Item Output Lo voltage Output Hi voltage Rise time Fall time Symbol VOLMF VOHMF trMF tfMF Min VCC-0.4 20 20 Typ 0.2 VCC-0.2 50 50 Max 0.4 100 100 Unit V V ns ns Test Conditions Iosink = 200mA Iosource = 200mA CL = 6000pF CL = 6000pF Note
* Dead band time
Item Dead band time1 Dead band time2 MR to MF delay time PWM to MR delay time MR delay time Maximum Dead band adjust time1 Maximum Dead band adjust time2 Symbol Td1typ Td2typ t1 t2 t3 Tdadj1 Tdadj2 Min 0 0 (-20) (-20) Typ 50 100 1 Td1typ +300 Td2typ +600 Max 100 200 (50) (50) Unit ns ns ns ns s ns ns Test Conditions RDB = 1.8k RDB = 1.8k t1 = MF off - MR on t2 = MR off - PWM off t3 = CT low trip point - MR on RDB = 47k RDB = 47k 1 1 1 1 1 Note
Note:
1. Design spec. Measurement is 50% slice point.
Rev.1, Jan. 2001, page 10 of 21
HA16341NT/FP, HA16342NT/FP
Electrical Characteristics (cont.)
(Ta = 25C, VCC = 12V, PG1 = 3V, Vtrig = 0V, VCS(+) = 0V, VCin = 0V, CCT = 330pF, GvOP1 = 26dB, GvOP4 = 40dB, RDB = 1.8k) * SS
Item SS sink current Symbol Idss Min 500 Typ Max Unit A Test Conditions PG1 = 2V, VSS = 2V Note
* OVP
Item OVP latch voltage Symbol VOVP Min 6.5 Typ 7.5 Max 8.5 Unit V Test Conditions Note
* Current consumption
Item Operating current Standby current Symbol ICC ISTBY Min 5.4 Typ 7.4 200 Max 9.4 600 Unit mA A Test Conditions VCT = 1V VCC = 8V, PG1 = 0V Note
Rev.1, Jan. 2001, page 11 of 21
HA16341NT/FP, HA16342NT/FP
Timing Chart 1 (Total)
VCC 0V
UVL1 Hi 10.0V typ
UVL1 Lo 9.0V typ
Vref (5V typ) 0V PG1 (by switch) 0V 3V ON
UVL2 threshold 4.6V typ
OFF
ON
UVL2 (internal) 0V
SS 0V VthCTH: 3.4V typ CT VthCTL: 1.3V typ 0V OUT (PWM) 0V 1.25V (100%) 1.187V (95%) EIN 0V
Note 1
OUT (HSP) 0V Note: 1. The output of PWM, MR and MF do not appear in the first period of CT cycle due to start-up latch circuit.
Rev.1, Jan. 2001, page 12 of 21
HA16341NT/FP, HA16342NT/FP
Timing Chart 2 (Hot Swap)
Vref 0V
3V PG1 0V Internal latch signal (inverting) (OVP, OCL or Reverse current) : Node S1 in Block Diagram 0V
SET
RESET
UVL2 (internal) 0V
1.25V (100%) 1.187V (95%)
EIN 0V
Internal latch signal : Node S2 in Block Diagram 0V
HSP out 0V
Gate charging by 10A source current
Gate discharging by 0.5A max sink current
Note: Reverse current is HA16341NT/FP only.
Rev.1, Jan. 2001, page 13 of 21
HA16341NT/FP, HA16342NT/FP
Timing Chart 3 (Dead Band Control)
VSS CT
PWM OUT
MR OUT
MF OUT Td1 Td2 t3 Note: VSS determines maximum duty. This waveform example shows the case of EIN = Lo. VSS: Voltage of SS pin 800 700 600
Td1, Td2 (ns)
t1
t2
Td1 Td2
Vref RDB HA16341 DB
500 400 300 200 100 0 0 10 20 30 40 50
RDB (k)
Rev.1, Jan. 2001, page 14 of 21
HA16341NT/FP, HA16342NT/FP
Timing Chart 4 (Soft Start)
CT SS
VthCTH: 3.4V Note *
CT SS
VthCTL: 1.3V
OUT (PWM)
Note: Self-oscillation: VthCTH = 3.4V typ Synchronized operation: VthCTH = 2.9V typ Case VHSS VthCTH Maximum duty would be the value specified in page 9. Case VHSS < VthCTH Maximum duty decrease to the corresponding value. Please refer to formula 1 as design value of maximum duty. Max duty = (tss - 0.63s - Td1) x Operating frequency Formula 1 C tss = CT (VHSS - VthCTL) Ici : CT charge current Ici : CT terminal capacitor CCT VthCTH : CT upper trip point VthCTL : CT lower trip point Select values R1, R2 and C1 for suitable maximum duty and SS time constant. Vref (5V) R1 C1 R2 HA16341 SS
VHSS =
R2 Vref (5V) R1 + R2
SS C R1 R2 R1 + R2 Figure A. SS Terminal Application
Rev.1, Jan. 2001, page 15 of 21
HA16341NT/FP, HA16342NT/FP
Timing Chart 5 (External Trigger Control)
Primary IC oscillation
0V
Primary IC AUX-OUT 0V
Trigger input (Trig terminal) 0V Trigger Vth Vtrig: -0.5V typ
Trigger detector internal signal 0V
VthCTH = about 2.9V @CCT = 430pF
Secondary oscillation 0V This IC is triggered by negative pulse. R1 and R2 must be calculated including internal impedance of 230k. Primary Secondary
Vref (5V) R1 Primary IC AUX-OUT R2 Figure B. External Trigger Application 230k Trig HA16341
Rev.1, Jan. 2001, page 16 of 21
HA16341NT/FP, HA16342NT/FP
Timing Chart 6 (Duty Control)
CT' + Vo OP1-2 (internal)
300mV
CT' + Vo OP1-2
1/3x(EOUT-2VBE)
1/3x(EOUT-2VBE) (internal)
OUT (PWM)
CT 5.33 The amplitude of CT' is 300mV typ at synchronous operation with trigger frequency as 200kHz and CCT = 430pF. CT' =
1/3x(EOUT-2VBE) 1.24V clamp
1.3 1.24 1.2 1.1 1.0 0.9 0.8
Duty control area No output area
in case of 50% max duty
0.7
Vo OP1-2 (V)
0.6 0.5 0.4 300mV 0.3 0.2 0.1 0 0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4 5.7 1.54V 2.44V 5.26V
Max duty area
VEOUT (V)
Rev.1, Jan. 2001, page 17 of 21
HA16341NT/FP, HA16342NT/FP
Timing Chart 7 (Current Limitting)
1/3x(EOUT-2VBE) = 1.24V clamped (internal)
CT' + Vo OP1-2 300mV (internal)
OUT (PWM)
CT 5.33 The amplitude of CT' is 300mV typ at synchronous operation with trigger frequency as 200kHz and CCT = 430pF. CT' =
70 60
PWM ON Duty (%)
50 40 30 20 10 0 20 CCT = 430pF, RDB = 1.8k, VHSS = 4V Synchronized operation with 200kHz 30 40 50 60 70
CS(+) (mV)
Rev.1, Jan. 2001, page 18 of 21
HA16341NT/FP, HA16342NT/FP
Timing Chart 8 (Interface with Primary Control IC)
Vref
PG1 (from primary IC)
Internal latch signal (inverting) (OVP, OCL or Reverse current) : Node S1 in Block Diagram
SET
RESET
UVL2 (internal signal)
OUT (PWM)
FAIL (to primary IC)
Note: Reverse current is HA16341NT/FP only.
Rev.1, Jan. 2001, page 19 of 21
HA16341NT/FP, HA16342NT/FP
Package Dimensions
As of January, 2001
Unit: mm
27.10 28.10 Max 24 13
8.8 10.0 Max
1
1.0
1.5 Max
12
5.06 Max
10.16
0.51 Min
2.54 Min
1.78 0.25
4.04 0.20
0.48 0.10
0.25 - 0.05 1 - 13
+ 0.10
Hitachi Code JEDEC EIAJ Mass (reference value)
DP-24TS 2.04 g
As of January, 2001
18.4 19.2 Max 26 14
Unit: mm
3.0 Max
*0.32 0.07 0.30 0.05
1 1.20 Max
13
8.3
10.93
+ 0.15 - 0.25
1.315
2.8 3.6 0.16 M
0.10 - 0.10
+ 0.15
0.80 *0.37 0.08 0.35 0.06
0 - 8
0.15 0.70 + 0.20 -
0.10
Hitachi Code JEDEC EIAJ Mass (reference value) FP-26DT 0.98 g
*Dimension including the plating thickness Base material dimension
Rev.1, Jan. 2001, page 20 of 21
HA16341NT/FP, HA16342NT/FP
Disclaimer
1. Hitachi neither warrants nor grants licenses of any rights of Hitachi's or any third party's patent, copyright, trademark, or other intellectual property rights for information contained in this document. Hitachi bears no responsibility for problems that may arise with third party's rights, including intellectual property rights, in connection with use of the information contained in this document. 2. Products and product specifications may be subject to change without notice. Confirm that you have received the latest product standards or specifications before final design, purchase or use. 3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However, contact Hitachi's sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation, traffic, safety equipment or medical equipment for life support. 4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product. 5. This product is not designed to be radiation resistant. 6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. 7. Contact Hitachi's sales office for any questions regarding this document or Hitachi semiconductor products.
Sales Offices
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For further information write to:
Hitachi Semiconductor (America) Inc. 179 East Tasman Drive San Jose,CA 95134 Tel: <1> (408) 433-1990 Fax: <1>(408) 433-0223 Hitachi Europe Ltd. Electronic Components Group Whitebrook Park Lower Cookham Road Maidenhead Berkshire SL6 8YA, United Kingdom Tel: <44> (1628) 585000 Fax: <44> (1628) 585200 Hitachi Europe GmbH Electronic Components Group Dornacher Strae 3 D-85622 Feldkirchen, Munich Germany Tel: <49> (89) 9 9180-0 Fax: <49> (89) 9 29 30 00
Copyright (c) Hitachi, Ltd., 2001. All rights reserved. Printed in Japan.
Colophon 4.0
Rev.1, Jan. 2001, page 21 of 21

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