HA16341NT/FP, HA16342NT/FP Redundant Secondary Switching Power Supply Controller REJ03F0148-0400 (Previous: ADE-204-035C) Rev.4.00 Jun 15, 2005 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 Ordering Information Type No. HA16341NT HA16342NT HA16341FP HA16342FP Rev.4.00 Jun 15, 2005 page 1 of 19 Package Code DP-24TS FP-26DT HA16341NT/FP, HA16342NT/FP Pin Arrangement HA16341NT, HA16342NT (DP-24TS) HA16341FP, HA16342FP (FP-26DT) CS(+) 1 24 CF(+) CS(+) 1 26 CF(+) CS(−) 2 23 CF(−) CS(−) 2 25 CF(−) MT 3 22 CFo MT 3 24 CFo CB 4 21 CFB CB 4 23 CFB Cin 5 20 EIN SGND 6 19 EOUT PGND TAB TAB PGND Cin 5 22 EIN SGND 6 21 EOUT PGND 7 20 PGND PGND TAB TAB PGND PG1 7 18 MF OUT FAIL 8 17 VCC PG1 8 19 MF OUT Trig 9 16 MR OUT FAIL 9 18 VCC CT 10 15 PWM OUT Trig 10 17 MR OUT SS 11 14 HSP CT 11 16 PWM OUT DB 12 13 Vref SS 12 15 HSP DB 13 14 Vref (Top view) (Top view) Pin Functions Pin No. DP-24TS Symbol FP-26DT Pin Name 1 2 1 2 CS(+) CS(−) Current sense amp input (+) Current sense amp input (–) 3 4 5 6 7 8 3 4 5 6 8 9 MT CB Cin SGND PG1 FAIL Current sense amp output Current bus output Line resistance compensation input Signal ground Remote on/off FAIL output (open-drain) 9 10 Trig External synchronization input 10 11 11 12 CT SS Timing capacitance Soft start 12 13 DB Dead band 13 14 15 14 15 16 Vref HSP PWM OUT Vref (5 V) Hot swap output PWM output 16 17 18 17 18 19 MR OUT VCC MF OUT MR output Power supply voltage MF output 19 20 21 21 22 23 EOUT EIN CFB Error amp output Error amp input Current share feedback output 22 24 CFo Current share differential amp output 23 24 25 26 CF(–) CF(+) Current share differential amp input (–) Current share differential amp input (+) TAB TAB, 7, 20 PGND Power ground Rev.4.00 Jun 15, 2005 page 2 of 19 HA16341NT/FP, HA16342NT/FP Block Diagram Current share input Error amp. + OP1 − + − CT' CS(−) + R OP1-2 − EOUT 19R S Q latch D R Q OCL R 2R + 0dB 2R − R OP6 + R 1.25V + OP4 − + Cin OP2 − SGND TAB S latch A R Q + − S2 E/IN 1.187V + − to latch B reset Start-up latch initial: Lo from B 1.25V OCL − + Driver PWM OUT Driver SW2 −12mV Start-up latch initial: Hi Reverse current comp. (only HA16341) CF(−) CFo + − Hi: PWM ON Light load detector − 20dB 10k DB generator HSP 1k SW2 on at HSP Hi CS(+) R RS-FF PGND R CF(+) 1k 6dB E/IN = 95% comp. PG1 CFB − 0dB OP5 2R 1.25V + OP3 − CB 1.25V VZ = 6.8V 2R 26dB MT EIN + R VZ = 1.24V CT level compression Point B − 2R + + Hi: 0.7V Lo: 0.5V 90k TAB CS(+) PGND Dead Band adjust Driver 16 pulse delay UVL1 MF OUT VCC + − Vref UVL2 SS comp. − + SS S1 RS-FF S latch B Q R Vref 5V 169µA CT Vref 5V 100k 128.5k Trig − + 2.5V + − Exit trigger control Delay S Q latch C R Q RS-FF 939µA Driver Vref MR OUT UVL2 Hi: stop SW1 OVP SW1 on: 1.3V SW1 off: 3.4V + − from Trig 7.5V + PG1 DB − PG1 50k Hi: 2.5V Lo: 2.0V FAIL FAIL Oscillator Unit R: Ω C: F Rev.4.00 Jun 15, 2005 page 3 of 19 HA16341NT/FP, HA16342NT/FP Absolute Maximum Ratings (Ta = 25°C) Item Ratings Unit Note Supply Voltage VCC 18 V DC output current1 Io1 ±0.1 A PWM OUT *1 Peak output current1 Iopeak1 ±1.0 A PWM OUT *2 DC output current2 Io2 ±0.2 A MF OUT *1 Peak output current2 Iopeak2 ±2.0 A MF OUT *2 DC output current3 Io3 ±0.1 A MR OUT *1 Peak output current3 Iopeak3 ±1.0 A MR OUT *2 DC output current4 Io4 – mA CB OUT DC output current5 Io5 ±500 µA CFB OUT DC output current6 Io6 20 mA FAIL OUT DC output current7 Io7 –5.0 mA Vref OUT Peak output current4 Iopeak4 0.5 A HSP sink DC output current8 Io8 ±500 µA MT OUT DC output current9 Io9 ±500 µA CFo OUT DC output current10 Io10 6 mA EOUT sink TRIG terminal voltage Vtrigmax –1.5 to VCC V CT terminal voltage VCTmax –0.3 to Vref V Vref terminal voltage Vrefmax –0.3 to Vref V SS terminal voltage Vssmax –0.3 to Vref V EIN terminal voltage VEINmax –0.3 to Vref V EOUT terminal voltage VEOUTmax –0.3 to VCC V PG1 terminal voltage VPG1max –0.3 to Vref V FAIL terminal voltage VFAILmax –0.3 to VCC V PWM OUT terminal voltage VoPWMmax –0.3 to VCC V MR OUT terminal voltage VoMRmax –0.3 to VCC V MF OUT terminal voltage VoMFmax –0.3 to VCC V HSP terminal voltage VoHSPmax –0.3 to VCC V CFB terminal voltage VCFBmax –0.3 to Vref V CS(+) terminal voltage VCS(+)max –0.3 to Vref V CS(–) terminal voltage VCS(−)max –0.3 to Vref V MT terminal voltage VMTmax –0.3 to Vref V Cin terminal voltage VCinmax –0.3 to Vref V 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.4.00 Jun 15, 2005 page 4 of 19 Symbol HA16341NT/FP, HA16342NT/FP Absolute Maximum Ratings (cont.) (Ta = 25°C) Item Symbol Ratings Unit Note CF(+) terminal voltage VCF(+)max –0.3 to Vref V CF(−) terminal voltage VCF(−)max –0.3 to Vref V CFo terminal voltage VCFomax –0.3 to Vref V CB terminal voltage VCBmax –0.3 to Vref V DB terminal voltage VDBmax –0.3 to Vref V Maximum power dissipation PT 4.17 W 1 Operating temperature Topr –40 to +105 °C Storage temperature Tstg –55 to +150 °C Junction temperature Tj 150 °C Note: 1. This is allowable value up to Ta = 25°C. Derate by θj-a = 30°C/W above that temperature. θj-a = 30°C/W is the case that HA16341NT is mounted on 30% wiring density glass epoxy board (105 mm × 76.2 mm × 1.6 mmt) and HA16341FP is mounted on a board which thermal resistance is 23°C/W because of θj-pin (SOP) = 7°C/W typ. Maximum Power Dissipation PT (W) 5.0 4.5 4.17 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 −50 −30 Rev.4.00 Jun 15, 2005 page 5 of 19 −10 30 50 70 90 110 10 Ambient Temperature Ta (°C) 130 150 170 HA16341NT/FP, HA16342NT/FP Electrical Characteristics (Ta = 25°C, VCC = 12V, PG1 = 3V, Vtrig = 0V, VCS(+) = 0V, VCin = 0V, CCT = 330pF, GvOP1 = 26dB, GvOP4 = 40dB, RDB = 1.8kΩ) • Current share Item CB output Hi voltage Symbol VCBH Min 2.5 Typ – Max – Unit V CB output Lo voltage CFB output Lo voltage VCBL VCFBL CFB output typ voltage – – – – 25 100 mV mV VCFBtyp 1.19 1.25 1.31 V OP1 input offset voltage CS(+) input bias current CS(−) input bias current Cin input bias current OP4 input resistance VioOP1 IibCS(+) IibCS(−) IibCin Rsin – – – – 0.75 – –20 0.2 0.2 1.00 (1) –30 1.0 1.0 1.25 mV µA µA µA kΩ Open loop gain OP1−OP6 Avo (70) 80 – dB 1 Band width OP1−OP6 BWCS – 700 – kHz 1 OCL detector threshold voltage VthOCL 59.5 62.5 65.5 mV CS(+) terminal voltage sensing Light load detector threshold Hi voltage VthHLL (2.0) 3.5 (5.0) mV CS(+) terminal voltage sensing 1 Light load detector threshold Lo voltage VthLL hysteresis VthLLL (1.0) 2.5 (4.0) mV CS(+) terminal voltage sensing 1 dVthLL (0.5) 1.0 (1.5) mV VthRC –6 –12 –18 mV CS(+) terminal voltage sensing Typ 1.19 –10 0.3 Max 1.23 –13 0.6 Unit V µA V Test Conditions 95% typ of reference 1.25V VHSP = 5V, VEIN = 2V VEIN = 1V, Iosink = 50mA Reverse current detector threshold Hi voltage Test Conditions Note Iosource = 300µA VCS(+) = 1V VCS(+) = 0V, RCB = 10kΩ Iosink = 100µA, HSP ON VCS(+) = 0V, VCB = 0.1V VCS(+) = 0V, VCB = 0V RfOP4 = 1kΩ, HSP ON 1 VCS(+) = 0V, VCS(–) = 0V VCS(+) = 0V, VCS(–) = 0V Vcin = 0V 1, 2 1 3 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 Rev.4.00 Jun 15, 2005 page 6 of 19 Min 1.14 –7 – Note HA16341NT/FP, HA16342NT/FP Electrical Characteristics (cont.) (Ta = 25°C, VCC = 12V, PG1 = 3V, Vtrig = 0V, VCS(+) = 0V, VCin = 0V, CCT = 330pF, GvOP1 = 26dB, GvOP4 = 40dB, RDB = 1.8kΩ) • Oscillator Min Typ Max Unit Typical oscillating frequency Item fosctyp Symbol 180 200 220 kHz Maximum oscillating frequency foscmax 400 – – kHz Typical oscillating temperature stability CT charge current CT discharge current Upper trip point Lower trip point Amplitude Exit trigger Vth dfosc – ±5 – % –135 616 – – – –0.3 –169 770 3.4 1.3 2.1 –0.5 –203 924 – – – –0.7 µA µA V V V V Ici Icd VthCTH VthCTL dVCT Vthtrig Test Conditions Note ±10% –20°C < Ta < 85°C 1 ±20% ±20% 2 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 Symbol Vref Vref-line Min 4.9 – Typ 5.0 5 Max 5.1 20 Unit V mV Load regulation Temperature stability Vref-load dVref – – 5 80 20 – mV ppm/°C 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 Note: Test Conditions Iosource = 1mA Note ±2% Iosource = 1mA 12V < VCC < 18V 0 < Iosource < 3mA –20°C < Ta < 85°C 1 1. Design spec. • UVL Item Hi threshold voltage Lo threshold voltage Hysteresis Rev.4.00 Jun 15, 2005 page 7 of 19 Test Conditions Note HA16341NT/FP, HA16342NT/FP Electrical Characteristics (cont.) (Ta = 25°C, VCC = 12V, PG1 = 3V, Vtrig = 0V, VCS(+) = 0V, VCin = 0V, CCT = 330pF, GvOP1 = 26dB, GvOP4 = 40dB, RDB = 1.8kΩ) • PG1 Item PG1 threshold Hi voltage PG1 threshold Lo voltage Input impedance Symbol VthHPG1 VthLPG1 RinPG1 Min 2.4 1.9 (37.5) Typ 2.5 2.0 50.0 Max 2.6 2.1 (62.5) Unit V V kΩ Test Conditions Symbol IleakFAIL VOLFAIL Min – – Typ – – Max –10 0.5 Unit µA V Test Conditions VFAIL = 5V Iosink = 10mA Note Item Input threshold voltage Symbol VthEIN Min 1.23 Typ 1.25 Max 1.27 Unit V Test Conditions VEOUT = 1.25V Note ±1.6% Input bias current Open loop gain Band width EOUT sink current EOUT source current EOUT clamp voltage EOUT Lo voltage Note: 1. Design spec. IibEIN AvoEA BWEA IosinkEA IosourceEA VOHEA VOLEA – 60 (0.7) 0.5 –100 5.8 – –0.2 80 1.4 5.0 –250 6.8 – –2.0 – – – – 7.8 1.0 µA dB MHz mA µA V V VEIN = 2V Note: Note 1 1. Design spec. • FAIL Item Leak current Output Lo voltage • Error amp. 1 VEIN = 1.5V, EOUT = 1.1V VEIN = 1.0V, EOUT = 5V VEIN = 1.0V VEIN = 1.5V, Iosink = 200µA • PWM OUT Item Output Lo voltage Output Hi voltage Rise time Fall time Maximum duty Minimum duty Note: 1. Design spec. Symbol VOLPWM VOHPWM trPWM tfPWM Dmax Dmin Rev.4.00 Jun 15, 2005 page 8 of 19 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 HA16341NT/FP, HA16342NT/FP Electrical Characteristics (cont.) (Ta = 25°C, VCC = 12V, PG1 = 3V, Vtrig = 0V, VCS(+) = 0V, VCin = 0V, CCT = 330pF, GvOP1 = 26dB, GvOP4 = 40dB, RDB = 1.8kΩ) • 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 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 Item Dead band time1 Dead band time2 MR to MF delay time PWM to MR delay time MR delay time Symbol Td1typ Td2typ t1 t2 t3 Min 0 0 (−20) (−20) – Typ 50 100 – – 1 Max 100 200 (50) (50) – Unit ns ns ns ns µs Test Conditions RDB = 1.8kΩ RDB = 1.8kΩ t1 = MF off − MR on t2 = MR off − PWM off Note Maximum Dead band adjust time1 Tdadj1 – Td1typ +300 – Maximum Dead band adjust time2 Tdadj2 – Td2typ +600 – • MF OUT Item Output Lo voltage Output Hi voltage Rise time Fall time • Dead band time Note: 1. Design spec. Measurement is 50% slice point. Rev.4.00 Jun 15, 2005 page 9 of 19 1 1 t3 = CT low trip point – MR on 1 ns RDB = 47kΩ 1 ns RDB = 47kΩ 1 HA16341NT/FP, HA16342NT/FP Electrical Characteristics (cont.) (Ta = 25°C, VCC = 12V, PG1 = 3V, Vtrig = 0V, VCS(+) = 0V, VCin = 0V, CCT = 330pF, GvOP1 = 26dB, GvOP4 = 40dB, RDB = 1.8kΩ) • SS Item SS sink current Symbol Idss Min 500 Typ – Max – Unit µA Test Conditions PG1 = 2V, VSS = 2V Note Symbol VOVP Min 6.5 Typ 7.5 Max 8.5 Unit V Test Conditions Note Symbol ICC ISTBY Min 5.4 – Typ 7.4 200 Max 9.4 600 Unit mA µA Test Conditions VCT = 1V VCC = 8V, PG1 = 0V Note • OVP Item OVP latch voltage • Current consumption Item Operating current Standby current Rev.4.00 Jun 15, 2005 page 10 of 19 HA16341NT/FP, HA16342NT/FP Timing Chart 1 (Total) UVL1 Hi 10.0V typ VCC UVL1 Lo 9.0V typ 0V UVL2 threshold 4.6V typ Vref (5V typ) 0V PG1 (by switch) 3V ON OFF ON 0V UVL2 (internal) 0V SS 0V VthCTH: 3.4V typ CT VthCTL: 1.3V typ 0V OUT (PWM) Note 1 0V 1.25V (100%) 1.187V (95%) EIN 0V 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.4.00 Jun 15, 2005 page 11 of 19 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 Gate charging by 10µA source current 0V Note: Reverse current is HA16341NT/FP only. Rev.4.00 Jun 15, 2005 page 12 of 19 Gate discharging by 0.5A max sink current HA16341NT/FP, HA16342NT/FP Timing Chart 3 (Dead Band Control) VSS CT PWM OUT MR OUT MF OUT Td1 Td2 t2 t1 t3 Note: VSS determines maximum duty. This waveform example shows the case of EIN = Lo. VSS: Voltage of SS pin 800 Td1 Td2 700 Vref RDB HA16341 DB Td1, Td2 (ns) 600 500 400 300 200 100 0 0 10 20 30 RDB (kΩ) Rev.4.00 Jun 15, 2005 page 13 of 19 40 50 HA16341NT/FP, HA16342NT/FP Timing Chart 4 (Soft Start) CT SS SS CT VthCTH: 3.4V Note * 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 − 0.63µs − Td1) × 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 HA16341 SS R2 VHSS = R2 Vref (5V) R1 + R2 SS C R1 R2 R1 + R2 Figure A. SS Terminal Application Rev.4.00 Jun 15, 2005 page 14 of 19 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 230kΩ. Primary Secondary Vref (5V) R1 Primary IC AUX-OUT 230k Trig HA16341 R2 Figure B. External Trigger Application Rev.4.00 Jun 15, 2005 page 15 of 19 HA16341NT/FP, HA16342NT/FP Timing Chart 6 (Duty Control) CT' + Vo OP1-2 (internal) 1/3×(EOUT−2VBE) CT' + Vo OP1-2 300mV 1/3×(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' = 1/3×(EOUT−2VBE) 1.24V clamp 1.3 1.24 1.2 1.1 1.0 0.9 Duty control area 0.8 No output area in case of 50% max duty Vo OP1-2 (V) 0.7 0.6 0.5 0.4 300mV Max duty area 0.3 0.2 1.54V 0.1 2.44V 5.26V 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 VEOUT (V) Rev.4.00 Jun 15, 2005 page 16 of 19 HA16341NT/FP, HA16342NT/FP Timing Chart 7 (Current Limitting) 1/3×(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 PWM ON Duty (%) 60 50 40 30 20 10 CCT = 430pF, RDB = 1.8kΩ, VHSS = 4V Synchronized operation with 200kHz 0 20 30 40 50 CS(+) (mV) Rev.4.00 Jun 15, 2005 page 17 of 19 60 70 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 UVL2 (internal signal) OUT (PWM) FAIL (to primary IC) Note: Reverse current is HA16341NT/FP only. Rev.4.00 Jun 15, 2005 page 18 of 19 SET RESET HA16341NT/FP, HA16342NT/FP Package Dimensions As of January, 2003 Unit: mm 27.10 28.10 Max 13 8.8 10.0 Max 24 12 4.04 ± 0.20 0.48 ± 0.10 0.51 Min 1.5 Max 1.78 ± 0.25 10.16 5.06 Max 1.0 2.54 Min 1 + 0.10 0.25 – 0.05 1° − 13° Package Code JEDEC JEITA Mass (reference value) DP-24TS − − 2.04 g As of January, 2003 Unit: mm 18.4 19.2 Max 14 1 13 *0.37 ± 0.08 0.35 ± 0.06 2.8 3.6 0.10 − 0.10 0.80 + 0.15 1.20 Max 0.16 M *0.32 ± 0.07 0.30 ± 0.05 3.0 Max 8.3 26 10.93 + 0.15 − 0.25 1.315 0° − 8° + 0.15 0.70 − 0.20 0.10 *Dimension including the plating thickness Base material dimension Rev.4.00 Jun 15, 2005 page 19 of 19 Package Code JEDEC JEITA Mass (reference value) FP-26DT − − 0.98 g Sales Strategic Planning Div. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Keep safety first in your circuit designs! 1. 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