ZXSC100-EVAL Diodes Zetex, ZXSC100-EVAL Datasheet - Page 16

• Manufacturer Part Number: ZXSC100-EVAL
• Description: BOARD EVALUATION FOR ZXSC100
• Manufacturer: Diodes Zetex

Specifications of ZXSC100-EVAL

• Main Purpose: DC/DC, Step Up
• Power - Output: 330mW
• Voltage - Output: 3.3V
• Current - Output: 100mA
• Voltage - Input: 0.93 ~ 3.5 V
• Regulator Topology: Boost
• Board Type: Fully Populated
• Utilized Ic / Part: ZXSC100
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ZXSC100
Output voltage ripple
Output voltage ripple is shown in Figure 8. The circuit
is operated with a 1.2V input voltage, 3.3V output
voltage and 100mA load current. Output voltage ripple
will be dependent, to a large extent, on the output
capacitor ESR. (see Applications section for
recommended capacitors).
Figure 8. Output voltage ripple for 3.3V/100mA
output.
Transient response
Transient response to step changes in load is a critical
feature in many converter circuits. The ZXSC100
operates a pulse by pulse regulation scheme and
therefore corrects for changes in the output every
pulse cycle, giving excellent response characteristic.
Measurement with a power supply
When measuring with a power supply it is important
to realise that the impedance is much greater than that
of a secondary battery (NiCd or NiMH). To simulate the
lower impedance of the battery x10 low ESR 1000uF
capacitors where placed in parallel at the input of the
conv erter.
A l l
t h e
dyn am ic
pe r f o rm an c e
measurements were taken using this technique.
ISSUE 3 - JANUARY 2004
S E M I C O N D U C T O R S
16