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BU9829GUL-W (16Kbit)
● LDO regulator DC operating characteristics (Unless otherwise specified Ta=-30 ℃ to 85 ℃ )
Datasheet
Parameter Symbol
Specification
Min. Typ. Max.
Unit test condition
Output Voltage1-1  V OUT 1-1    2.9     3.0      3.2      V  3.2V ≦ Vcc2 ≦ 3.6V, IOUT=0, 2mA, VSET=1, 0=[1:1]
Output Voltage1-2  V OUT 1-2    2.9     3.0      3.1      V  3.2V ≦ Vcc2 ≦ 3.6V, IOUT=2, 10mA, VSET=1, 0=[1:1]
Output Voltage2-1  V OUT 2-1    2.8     2.9      3.1      V  3.1V ≦ Vcc2 ≦ 3.6V, IOUT=0, 2mA, VSET=1, 0=[1:0]
Output Voltage2-2  V OUT 2-2    2.8     2.9      3.0      V  3.1V ≦ Vcc2 ≦ 3.6V, IOUT=2, 10mA, VSET=1, 0=[1:0]
Output Voltage3-1  V OUT 3-1    2.7     2.8      3.0      V  3.0V ≦ Vcc2 ≦ 3.6V, IOUT=0, 2mA, VSET=1, 0=[0:1]
Output Voltage3-2  V OUT 3-2    2.7     2.8      2.9      V  3.0V ≦ Vcc2 ≦ 3.6V, IOUT=2, 10mA, VSET=1, 0=[0:1]
Output Voltage4-1  V OUT 4-1    2.6     2.7      2.9      V  2.9V ≦ Vcc2 ≦ 3.6V, IOUT=0, 2mA, VSET=1, 0=[0:0]
Output Voltage4-2  V OUT 4-2    2.6     2.7      2.8      V  2.9V ≦ Vcc2 ≦ 3.6V, IOUT=2, 10mA, VSET=1, 0=[0:0]
Operating Current I CC
Standby Current I SB
- - 200 μA Vcc2=3.6V, IOUT=0A
- - 1.0 μA Vcc2=3.6V, IOUT=0A, LDOEN=GND
“H” Input Voltage VIH 1.4 - Vcc2+0.3 V 2.9V ≦ Vcc2 ≦ 3.6V
“L” Input Voltage VIL -0.3 - 0.6 V 2.9V ≦ Vcc2 ≦ 3.6V
● LDO regulator AC operating characteristics
Parameter Symbol
Vcc1 Rise Time tV CC 1
LDOEN Wait Time t LDOEN
Specification
Min. Typ. Max.
- - 5
15 - -
Unit
msec
msec
Test condition
V CC 1 x 0% → V CC 1 x 95% point
V CC 1 x 0%point → LDOEN=High
● Output voltage depend on VSET bit
The 2bit data are stored into the VSET memory and output voltage change among V OUT 1 to V OUT 4.
VSET data are written into non-volatile memory array. Initial VSET data is 1, 0 in VSET[1:0] and V OUT is 2.9V.
STEP V OUT (typ.) [V]
VSET1
VSET0
V OUT 1
V OUT 2
V OUT 3
V OUT 4
3.0
2.9
2.8
2.7
1
1
0
0
1
0
1
0
● Input power supply regulation timing
① Using EEPROM PART
In case of using EEPROM part, be sure to raise Vcc1 up to operating voltage. In this time, Vcc2 has no connection with
operating.
Vcc1
EEPROM EEPROM部電源
Power Supply
Vcc2
LDOレギュレータ部電源
Operating
Not
LDO regulator
Power Supply
Not
動作不可
Operating
EEPROM動作可能範囲
Not
動作不可
Operating
Operating
EEPROM動作可能範囲
動作不可
Operating
Figure 3. Using EEPROM Part, Regulation Timing
② Using LDO regulator part
In case of using LDO regulator part, be sure to raise Vcc1 and Vcc2 up to operating voltage.
After rising Vcc1, wait 15msec and rising LDOEN.
When LDOEN is raised, Vcc1 must be operating voltage.
Vcc1
EEPROM
Power Supply
Vcc2
LDO regulator
Power Supply
LDOEN
tVcc1:MAX 5msec
t LDOEN : MIN 15msec
tVcc1:MAX 5msec
t LDOEN : MIN 15msec
Not
Operating
Operating
Not
Operating
Operating
Not
Operating
Figure 4. Using LDO Regulator Part, Regulation Timing
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
5/23
TSZ02201-0R2R0G100400-1-2
28.AUG.2012 Rev.001
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