CS5158 Cherry Semiconductor Corporation, CS5158 Datasheet
CS5158
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CS5158 Summary of contents
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... DAC, short circuit protection, 0.8% output tol- erance for the 01111 DAC code (1.3V) and 1% for the remaining DAC codes, V monitor, and pro- CC grammable soft start capability. The CS5158 is available in 16 pin surface mount. ® II processor 5V 1200µF/10V x 3 AlEl IRL3103 2µ ...
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Pin Name .16V/-0.3V . ...
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Electrical Characteristics: 0°C < ID1 ID0 ID3 GATE(L) PARAMETER DAC: continued ID4 ID3 ID2 ID1 ID0 ...
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Electrical Characteristics: 0°C < ID0 ID3 GATE(L) PARAMETER PWM Comparator Transient Response V Bias Current FFB Supply Current I No Switching CC1 I No Switching CC2 Operating I CC1 Operating ...
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PACKAGE PIN # PIN SYMBOL 16L SO Narrow 11 PGnd 12 V GATE( CC1 14 LGnd 15 COMP Monitor CC1 Comparator V - CC1 + 3.90V 3.85V SS V ID0 V ID1 Error 5 BIT ...
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... The first range is 2.10V to 3.50V in 100mV steps, the second is 1.30V to 2.05V in 50mV steps, depending on the digital input code. If all five bits are left open, the CS5158 enters adjust mode. In adjust mode, the designer can choose any output voltage by using resistor divider feedback to the ...
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... V ) (5V/div.) CC1 CC2 Trace Input (1V/div.) Figure 2: CS5158 demonstration board startup in response to increasing 12V and 5V input voltages. Extended off time is followed by normal off time operation when output voltage achieves regulation to the error amplifier output. Trace 1 - Regulator Output Voltage (1V/div.) Trace 3 - COMP Pin (error amplifier output) (1V/div ...
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... Trace 1 - Regulator Output Voltage (100mV/div.) Trace 3 - Regulator Output Current (10A/div.) Figure 7: CS5158 demonstration board response to a 0.5 to 13A load pulse (output set for 2.8V). Applications Information: continued Trace 1 - Regulator Output Voltage (100mV/div.) Trace 2 - Inductor Switching Node (5V/div ...
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... Trace Supply Voltage (2V/div.) Trace 3 - Soft Start Timing Capacitor (1V/div.) Trace 2 - Inductor Switching Node (2V/div.) Figure 10: CS5158 demonstration board hiccup mode short circuit pro- tection. Gate pulses are delivered while the soft start capacitor charges, and cease during discharge. Applications Information: continued < ...
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... CS5158 Selecting External Components V FFB The CS5158 can be used with a wide range of external power components to optimize the cost and performance of a particular design. The following information can be used as general guidelines to assist in their selection. NFET Power Transistors Both logic level and standard MOSFETs can be used ...
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... GATE(H) IN Trace (10V/div.) GATE(L) Trace 2 = Inductor Switching Node (5V/div.) Figure 17: CS5158 gate drive waveforms depicting rail to rail swing. The most important aspect of MOSFET performance is RDS , which effects regulator efficiency and MOSFET ON thermal management requirements. The power dissipated by the MOSFETs may be estimated as follows ...
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A heatsink may be added to TO-220 components to reduce their thermal impedance. A number of PC board layout techniques such as thermal vias and additional copper foil area can be used to improve the power handling capability of surface ...
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... AIEI Si9410 Connect to other circuits for current sharing 13 12V 3.3V + 1200µF/10V x 3 AIEI Si9410 CC2 CC1 GATE(H) 5µH V ID0 V ID1 ID2 CS5158 + V ID3 V Si9410 ID4 V GATE(L) C OFF SS PGnd COMP 3.3k V FFB LGnd 100pF 2.5V/7A 1200µF/10V x 5 AIEI ...
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... PACKAGE DIMENSIONS IN mm (INCHES) Lead Count Metric Max 16L SO Narrow 10.00 1.27 (.050) 0.40 (.016) REF: JEDEC MS-012 Ordering Information Part Number Description CS5158GD16 16L SO Narrow CS5158GDR16 16L SO Narrow (tape & reel) Rev. 2/16/99 Package Specification D Thermal Data English R Min Max Min ΘJC R 9.80 .394 .386 Θ ...