nFEATUR
l A Guaranteed Start-Up from ls than 0.9 V.
l High Efficiency.
l Low Quicent Current.
l Ls 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 Packag: SOT-89 and TO-92.
nAPPLICATIONS
l Pagers.
l Cameras.
l Wirels Microphon.
l Pocket Organizers.
l Battery Backup Suppliers.
l Portable Instruments.
nDCRIPTIONnFEATUR
l A Guaranteed Start-Up from ls than 0.9 V.
l High Efficiency.
l Low Quicent Current.
l Ls Number of External Components needed.
l Low Ripple and Low Noise.nFEATUR
l A Guaranteed Start-Up from ls than 0.9 V.
l High Efficiency.
l Low Quicent Current.
l Ls 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 Packag: SOT-89 and TO-92.
nAPPLICATIONS
l Pagers.
l Cameras.
l Wirels Microphon.
l Pocket Organizers.
l Battery Backup Suppliers.
l Portable Instruments.
nDCRIPTION
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 ls
than 0.9V input with 1mA load. Pulse Frequency
Modulation scheme brings optimized performance
for applications with light output loading and low
input voltag. The output ripple and noise are
lower compared with the circuits operating in P
mode.
The PFM control circuit operating in 100KHz (max.)
switching rate rults in aller pive
components. The space saving SOT-89 and TO-
92 packag make the AIC1638 an ideal choice of
DC/DC converter for space conscious applications,
like pagers, electronic cameras, and wirelsnFEATUR
l A Guaranteed Start-Up from ls than 0.9 V.
l High Efficiency.
l Low Quicent Current.
l Ls 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 Packag: SOT-89 and TO-92.
nAPPLICATIONS
l Pagers.
l Cameras.
l Wirels Microphon.
l Pocket Organizers.
l Battery Backup Suppliers.
l Portable Instruments.
nDCRIPTION
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 ls
than 0.9V input with 1mA load. Pulse Frequency
Modulation scheme brings optimized performance
for applications with light output loading and low
input voltag. The output ripple and noise are
lower compared with the circuits operating in P
mode.
The PFM control circuit operating in 100KHz (max.)
switching rate rults in aller pive
components. The space saving SOT-89 and TO-
92 packag make the AIC1638 an ideal choice ofnFEATUR
l A Guaranteed Start-Up from ls than 0.9 V.
l High Efficiency.
l Low Quicent Current.
l Ls 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 Packag: SOT-89 and TO-92.
nAPPLICATIONS
l Pagers.
l Cameras.
l Wirels Microphon.
l Pocket Organizers.
l Battery Backup Suppliers.
l Portable Instruments.
nDCRIPTION
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 ls
than 0.9V input with 1mA load. Pulse Frequency
Modulation scheme brings optimized performance
for applications with light output loading and low
input voltag. The output ripple and noise are
lower compared with the circuits operating in P
mode.
The PFM control circuit operating in 100KHz (max.)
switching rate rults in aller pive
components. The space saving SOT-89 and TO-
92 packag make the AIC1638 an ideal choice of
DC/DC converter for space conscious applications,
like pagers, electronic cameras, and wirels
microphon.
DC/DC converter for space conscious applications,
like pagers, electronic cameras, and wirels
microphon.
microphon.
l Fixed Output Voltage: 2.7V, 3.0V, 3.3V, and 5V.
l Space Saving Packag: SOT-89 and TO-92.
nAPPLICATIONS
l Pagers.
l Cameras.
l Wirels Microphon.
l Pocket Organizers.
l Battery Backup Suppliers.nFEATUR
l A Guaranteed Start-Up from ls than 0.9 V.
l High Efficiency.
l Low Quicent Current.
l Ls 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 Packag: SOT-89 and TO-92.
nAPPLICATIONS
l Pagers.
l Cameras.
l Wirels Microphon.
l Pocket Organizers.
l Battery Backup Suppliers.
l Portable Instruments.
nDCRIPTION
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 ls
than 0.9V input with 1mA load. Pulse Frequency
Modulation scheme brings optimized performance
for applications with light output loading and low
input voltag. The output ripple and noise are
lower compared with the circuits operating in P
mode.
The PFM control circuit operating in 100KHz (max.)
switching rate rults in aller pive
components. The space saving SOT-89 and TO-
92 packag make the AIC1638 an ideal choice of
DC/DC converter for space conscious applications,
like pagers, electronic cameras, and wirels
microphon.
l Portable Instruments.
nDCRIPTION
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 ls
than 0.9V input with 1mA load. Pulse Frequency
Modulation scheme brings optimized performance
for applications with light output loading and low
input voltag. The output ripple and noise are
lower compared with the circuits operating in P
mode.
The PFM control circuit operating in 100KHz (max.)
switching rate rults in aller pive
components. The space saving SOT-89 and TO-
92 packag make the AIC1638 an ideal choice of
DC/DC converter for space conscious applications,
like pagers, electronic cameras, and wirels
microphon.
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 ls
than 0.9V input with 1mA load. Pulse Frequency
Modulation scheme brings optimized performance
for applications with light output loading and low
input voltag. The output ripple and noise are
lower compared with the circuits operating in P
mode.
The PFM control circuit operating in 100KHz (max.)
switching rate rults in aller pive
components. The space saving SOT-89 and TO-
92 packag make the AIC1638 an ideal choice of
DC/DC converter for space conscious applications,
like pagers, electronic cameras, and wirels
microphon.