MB39A132QN-G-ERE1 Fujitsu Semiconductor America Inc, MB39A132QN-G-ERE1 Datasheet - Page 18

• Manufacturer Part Number: MB39A132QN-G-ERE1
• Description: IC CONV DC-DC LI-ION 32QFN
• Manufacturer: Fujitsu Semiconductor America Inc

Specifications of MB39A132QN-G-ERE1

• Function: Charge Management
• Battery Type: Lithium-Ion (Li-Ion)
• Operating Temperature: 25°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 865-1020

MB39A132
(10) Power supply control block (CTL1)
(11) Current Amp1 control block (CTL2)
CTL2 function table
(12) Bias voltage block (VB)
(13) Off time control block (Off Time Control)
18
CTL1 function table
The power supply control block controls the DC/DC converter operation. When the CTL1 pin (pin 23) is set
to "L" level, the DC/DC converter enters standby mode. In the standby mode, only the AC adapter detection
function is operable. (The typical supply current value is 6 μA in the standby mode.)
The Current Amp1 controller controls the Current Amp1 operation. When the CTL2 pin is set to "H" level,
the Current Amp1 becomes operable.
When the CTL1 pin (pin 23) is set to the "L" level and the CTL2 pin (pin32) is set to the "H" level after full-
charge, only Current Amp1 and the AC adapter detection function becomes operable.
The bias voltage block outputs 5 V (Typ) for the power supply of the output circuit and for setting the bootstrap
voltage.
When this IC operates by high on-duty, voltage of both ends of bootstrap capacitor CB is decreasing
gradually. In such the case, off time control block charges with CB by compulsorily generating off time
(0.3 μs Typ).
CTL1
CTL2
H
H
L
L
DC/DC converter
Current Amp1
OFF (Standby)
OFF (Standby)
ON (Active)
ON (Active)
control
AC adapter detection
AC adapter detection
ON (Active)
ON (Active)
ON (Active)
ON (Active)
DS04–27265–3E