tb7100f TOSHIBA Semiconductor CORPORATION, tb7100f Datasheet
tb7100f
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tb7100f Summary of contents
Page 1
... Toshiba BiCD Integrated Circuit Silicon Monolithic Step-down DC-DC Converter IC The TB7100F is a single-chip step-down DC-DC converter IC. Equipped with a built-in high-speed and low on-resistance power MOSFET, and utilizing a chopper circuit, this IC can achieve a high efficiency in a wide load current range. Features • Capable of high current drive (I ...
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... Output voltage feedback pin. This is connected to the internal error amplifier, which is supplied 8 FB with a reference voltage of 0.8 V (typ.). Current detection 1.2 V Control Driver logic Error amplifier Reference voltage (0.8 V) SGND PGND COMP (pin 4) (pin 3) (pin 1) Pin Description = low. 1 µA or lower operating current ENB 2 TB7100F V (pin (pin 5) FB (pin and SW pins 2004-09-10 ...
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... Low Voltage operation OSC increase Hysteresis: 25°C (typ.) 3 TB7100F The peak switch current is determined according to the V COMP . Hysteresis: 0.1 V (typ) OSC : Internal oscillator output voltage I : Load current OUT V : Output voltage OUT V : COMP pin voltage COMP I : Inductor current ...
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... Symbol Rating V -0.3～ -0.3～ -0.3～ -0.3～6 ENB <0.3 ENB IN ENB IN P 0.7 D Topr -40～85 T 150 ch T -55～150 stg Symbol Max R 178.6 (Note 1) th (ch-a) 25.4 × 25.4 × 0.8 (Unit: mm) 4 TB7100F Unit ℃ °C °C Unit °C /W 2004-09-10 ...
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... IN ENB T － Ω ENB － ±20μA COMP － － － － － － － － － 5 TB7100F = Min Typ. Max Unit 3 5 5.5 V － － 700 mA － 570 750 μA － － 1 μA 3.5 － ...
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... A (min). Therefore select an inductor whose current rating is no lower than the peak SW(PEAK) switch current [1 A (min)] of the TB7100F. If the current rating is exceeded, the inductor becomes saturated, leading to an unstable DC-DC converter operation and ...
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... Setting the COMP pin for phase compensation The COMP pin is intended to compensate for any phase delay that may occur inside or outside the TB7100F. Phase compensation is carried out using resistors and capacitors connected to the COMP pin. The constants of the phase compensation components are ...
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... V ENB IN FB TB7100F SGND PGND SBD Figure 4: TB7100F board layout pins as close to the IC as possible and ground them T pins. The voltage between the ENB and TB7100F : For the sections shown as solid lines, use thick wires and make them as short as possible. ...
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... Ambient temperature 160 Input voltage V 9 TB7100F – ENB = 0 120 k Ω 120 160 (° – 120 160 (° ...
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... Ambient temperature T R DS(ON) 0.4 0.3 0.2 0.1 0 160 0 2 Input voltage V 10 TB7100F – Return Detection 40 80 120 160 (° – COMP = ± 20 μ 120 160 (° – 0 °C ...
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... FB 1 0.9 0.8 0.7 0.6 0.5 8 -80 -40 0 Ambient temperature T f OSC 1000 800 600 400 200 160 11 TB7100F – 0 120 160 (° – VENB = 120 160 (° – ENB = 120 k Ω ...
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... Load current V OUT 2 OUT = 1 OSC = 550 kHz L = 6.8 μ H 1.9 R COMP = 1 k Ω C COMP = 3300pF Ta = 25°C 1.8 1.7 1.6 1 0.001 Load current 12 TB7100F – ENB = °C 100 1000 (kΩ – I OUT 0 (A) OUT – I OUT 0.1 1 ...
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... Load current η – I 100 0.001 Load current 13 TB7100F – I OUT 0 (A) OUT OUT OUT = 1 OSC = 550 kHz L = 6.8 μ COMP = 1 k Ω C COMP = 3300pF Ta = 25°C 0 (A) OUT OUT OUT = 1 ...
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... Ambient temperature T (° η – I 100 0.001 0.01 Load current I 160 14 TB7100F OUT OUT = 3 OSC = 550 kHz L = 6.8 μ COMP = 1 k Ω C COMP = 3300pF Ta = 25°C 0.1 1 (A) OUT 2004-09-10 ...
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... Package dimensions SON8-P-0303-0.65A 8 0.1 max 1 0.33 ± 0.05 0.05 0.475 0.65 2.9 ± 0.1 S 0.025 S : 0.016 g (Typ.) Weight 0. TB7100F Unit: mm 0.17 ± 0.02 2004-09-10 ...
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... Unintended Usage of TOSHIBA products listed in this document shall be made at the customer’s own risk. • TOSHIBA products should not be embedded to the downstream products which are prohibited to be produced and sold, under any law and regulations. 16 TB7100F 030619EAA 2004-09-10 ...