nFEATURES
l A Guaranteed Start-Up from less than 0.9 V.
l High Efficiency.
l Low Quiescent Current.
l Less Number of External Components needed.
l Low Ripple and Low Noise.
l Fixed Output Voltage: 2.7V, 3.0V, 3.3V, and 5V.
l Space Saving Packages: SOT-89 and TO-92.
nAPPLICATIONS
l Pagers.
l Cameras.
l Wireless Microphones.
l Pocket Organizers.
l Battery Backup Suppliers.
l Portable Instruments.
nDESCRIPTIONnFEATURES
l A Guaranteed Start-Up from less than 0.9 V.
l High Efficiency.
l Low Quiescent Current.
l Less Number of External Components needed.
l Low Ripple and Low Noise.nFEATURES
l A Guaranteed Start-Up from less than 0.9 V.
l High Efficiency.
l Low Quiescent Current.
l Less Number of External Components needed.
l Low Ripple and Low Noise.
l Fixed Output Voltage: 2.7V, 3.0V, 3.3V, and 5V.
l Space Saving Packages: SOT-89 and TO-92.
nAPPLICATIONS
l Pagers.
l Cameras.
l Wireless Microphones.
l Pocket Organizers.
l Battery Backup Suppliers.
l Portable Instruments.
nDESCRIPTION
The AIC1638 is a high efficiency step-up DC/DC
converter for applications using 1 to 4 NiMH
battery cells. Only three external components are
required to deliver a fixed output voltage of 2.7V,
3.0V, 3.3V, or 5V. The AIC1638 starts up from less
than 0.9V input with 1mA load. Pulse Frequency
Modulation scheme brings optimized performance
for applications with light output loading and low
input voltages. The output ripple and noise are
lower compared with the circuits operating in PSM
mode.
The PFM control circuit operating in 100KHz (max.)
switching rate results in smaller passive
components. The space saving SOT-89 and TO-
92 packages make the AIC1638 an ideal choice of
DC/DC converter for space conscious applications,
like pagers, electronic cameras, and wirelessnFEATURES
l A Guaranteed Start-Up from less than 0.9 V.
l High Efficiency.
l Low Quiescent Current.
l Less Number of External Components needed.
l Low Ripple and Low Noise.
l Fixed Output Voltage: 2.7V, 3.0V, 3.3V, and 5V.
l Space Saving Packages: SOT-89 and TO-92.
nAPPLICATIONS
l Pagers.
l Cameras.
l Wireless Microphones.
l Pocket Organizers.
l Battery Backup Suppliers.
l Portable Instruments.
nDESCRIPTION
The AIC1638 is a high efficiency step-up DC/DC
converter for applications using 1 to 4 NiMH
battery cells. Only three external components are
required to deliver a fixed output voltage of 2.7V,
3.0V, 3.3V, or 5V. The AIC1638 starts up from less
than 0.9V input with 1mA load. Pulse Frequency
Modulation scheme brings optimized performance
for applications with light output loading and low
input voltages. The output ripple and noise are
lower compared with the circuits operating in PSM
mode.
The PFM control circuit operating in 100KHz (max.)
switching rate results in smaller passive
components. The space saving SOT-89 and TO-
92 packages make the AIC1638 an ideal choice ofnFEATURES
l A Guaranteed Start-Up from less than 0.9 V.
l High Efficiency.
l Low Quiescent Current.
l Less Number of External Components needed.
l Low Ripple and Low Noise.
l Fixed Output Voltage: 2.7V, 3.0V, 3.3V, and 5V.
l Space Saving Packages: SOT-89 and TO-92.
nAPPLICATIONS
l Pagers.
l Cameras.
l Wireless Microphones.
l Pocket Organizers.
l Battery Backup Suppliers.
l Portable Instruments.
nDESCRIPTION
The AIC1638 is a high efficiency step-up DC/DC
converter for applications using 1 to 4 NiMH
battery cells. Only three external components are
required to deliver a fixed output voltage of 2.7V,
3.0V, 3.3V, or 5V. The AIC1638 starts up from less
than 0.9V input with 1mA load. Pulse Frequency
Modulation scheme brings optimized performance
for applications with light output loading and low
input voltages. The output ripple and noise are
lower compared with the circuits operating in PSM
mode.
The PFM control circuit operating in 100KHz (max.)
switching rate results in smaller passive
components. The space saving SOT-89 and TO-
92 packages make the AIC1638 an ideal choice of
DC/DC converter for space conscious applications,
like pagers, electronic cameras, and wireless
microphones.
DC/DC converter for space conscious applications,
like pagers, electronic cameras, and wireless
microphones.
microphones.
l Fixed Output Voltage: 2.7V, 3.0V, 3.3V, and 5V.
l Space Saving Packages: SOT-89 and TO-92.
nAPPLICATIONS
l Pagers.
l Cameras.
l Wireless Microphones.
l Pocket Organizers.
l Battery Backup Suppliers.nFEATURES
l A Guaranteed Start-Up from less than 0.9 V.
l High Efficiency.
l Low Quiescent Current.
l Less Number of External Components needed.
l Low Ripple and Low Noise.
l Fixed Output Voltage: 2.7V, 3.0V, 3.3V, and 5V.
l Space Saving Packages: SOT-89 and TO-92.
nAPPLICATIONS
l Pagers.
l Cameras.
l Wireless Microphones.
l Pocket Organizers.
l Battery Backup Suppliers.
l Portable Instruments.
nDESCRIPTION
The AIC1638 is a high efficiency step-up DC/DC
converter for applications using 1 to 4 NiMH
battery cells. Only three external components are
required to deliver a fixed output voltage of 2.7V,
3.0V, 3.3V, or 5V. The AIC1638 starts up from less
than 0.9V input with 1mA load. Pulse Frequency
Modulation scheme brings optimized performance
for applications with light output loading and low
input voltages. The output ripple and noise are
lower compared with the circuits operating in PSM
mode.
The PFM control circuit operating in 100KHz (max.)
switching rate results in smaller passive
components. The space saving SOT-89 and TO-
92 packages make the AIC1638 an ideal choice of
DC/DC converter for space conscious applications,
like pagers, electronic cameras, and wireless
microphones.
l Portable Instruments.
nDESCRIPTION
The AIC1638 is a high efficiency step-up DC/DC
converter for applications using 1 to 4 NiMH
battery cells. Only three external components are
required to deliver a fixed output voltage of 2.7V,
3.0V, 3.3V, or 5V. The AIC1638 starts up from less
than 0.9V input with 1mA load. Pulse Frequency
Modulation scheme brings optimized performance
for applications with light output loading and low
input voltages. The output ripple and noise are
lower compared with the circuits operating in PSM
mode.
The PFM control circuit operating in 100KHz (max.)
switching rate results in smaller passive
components. The space saving SOT-89 and TO-
92 packages make the AIC1638 an ideal choice of
DC/DC converter for space conscious applications,
like pagers, electronic cameras, and wireless
microphones.
The AIC1638 is a high efficiency step-up DC/DC
converter for applications using 1 to 4 NiMH
battery cells. Only three external components are
required to deliver a fixed output voltage of 2.7V,
3.0V, 3.3V, or 5V. The AIC1638 starts up from less
than 0.9V input with 1mA load. Pulse Frequency
Modulation scheme brings optimized performance
for applications with light output loading and low
input voltages. The output ripple and noise are
lower compared with the circuits operating in PSM
mode.
The PFM control circuit operating in 100KHz (max.)
switching rate results in smaller passive
components. The space saving SOT-89 and TO-
92 packages make the AIC1638 an ideal choice of
DC/DC converter for space conscious applications,
like pagers, electronic cameras, and wireless
microphones.