Datasheet
Single-Package Regulator series
0.175A/0.19A Output Fully Integrated
Step Up/Down Charge pump regulator
BZ1A5001GM
●
General Description
BZ1A5001GM is a Single-Package Regulator with
integrated peripheral parts. The time and effort of the
design can be saved. It can contribute in shortening the
design time of portable devices and industrial apparatus,
parts count reduction, and miniaturization. BZ1A5001GM
is based on Dual Phase Step Up/Down Charge pump
Regulator IC. Output Voltage and Current Rating of
5.0V/0.175A and 4.5V/0.19A can be chosen by VSEL.
Additionally, Oscillation frequency of 642KHz and
238KHz can be chosen by FSEL. It is the best power
supply for HDMI, USB on the go, and LED torch Light for
mobile phone. Brightness can be adjusted by EN.
●
Features
No external parts needed
Reverse current prevention from an output
Selectable Output Voltage
Selectable Oscillation Frequency
0uA typical standby current
Built-in Over Current Protection (OCP)
Built-in Thermal Shut Down circuit (TSD)
Ultra small package
●Application
Smart Phone, Mobile Phone, Portable Audio Player,
Portable Devices, POL Regulator
HDMI Devices, USB on the go Devices,
LED torch Light Devices
●Package
BGA-MD
TOP VIEW
W(Typ.) x D(Typ.) x H(Max.)
2.30mm x 2.40mm x 1.00mm
BOTTOM VIEW
Pin 1
●Typical
Application Circuit
Vin=2.7½5.5V
VIN
A1
C1
VOUT
Vout=4.5V 5.0V
VIN
A2
C2
VOUT
B3
ND
EN
B1
A3
VSEL
●
Pin Configuration (Top View)
CF2
CF1
ND
ND
B2
C3
FSEL
3
2
1
Figure 2. Typical Application Circuit
C
Cout
Pin description
Pin No
1
2
3
4
5
6
7
8
9
Symbol
A1
A2
A3
B1
B2
B3
C1
C2
C3
Name
VIN
VIN
VSEL
GND
GND
EN
VOUT
VOUT
FSEL
Function
Power supply Input Pin
Power supply Input Pin
Output Select Pin
GND Pin
GND Pin
Enable Pin
Output pin
Output Pin
Frequency Select Pin
B
A
Cin
PIN1 Mark
(Pin A1)
PIN1 (Pin A1)
Figure 1. Pin Configuration
(Please check p.6/11 for details)
○Structure：Silicon
monolithic integrated circuit
○This
product has no protection against radioactive rays
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1/11
TSZ22111・14・001
2013.02.15 Rev.002
BZ1A5001GM
●Block
Diagram
Datasheet
or 5.0V
~10 LED
1M
Ω
1M
Ω
Cout
Cin
CF1
CF2
：
：
：
：
1608
0603
0603
0603
2.2uF
0.22uF
1uF
1uF
10V
6.3V
6.3V
6.3V
1M
Ω
Figure 3. Block Diagram
●Description
of Block
1. ON/OFF Control
The voltage level of EN Pin controls whether the device is turned ON or OFF.
EN = “H” : Active
EN = “L” : Standby Circuit current is 0uA
2. Low Ripple voltage by Dual Phase Charge pump
Low Ripple output voltage is possible through the use of Dual Phase Charge pump & Fixed frequency.
Ripple has significantly reduced compared to previous Charge-Pump regulators.
3. Selectable Frequency
The voltage level of FSEL pin selects the oscillation frequency.
FSEL=”H”:642kHz
FSEL=”L”:238kHz
4. Power Dissipation
Power Dissipation is calculated as follows.
P
D
= P
IN
－P
OUT
= (V
IN
× I
IN
)－(V
O
× I
O
) [w]
Please set up Vin & Io not to exceed the allowable power dissipation.
Since it is greatly dependent also on the PCB layout, the allowable power dissipation should consider the heat dissipation
characteristic of the PCB layout design.
5. Short circuit protection
Protects the device when the output is short-circuited to the ground by limiting the output current.(TYP:150mA)
Once short-circuit is cleared, normal LSI operation is resumed (automatic return).
OCP point is 800mA(Typ).
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TSZ02201-0RGR0A100010-1-2
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BZ1A5001GM
6.
Datasheet
Thermal shutdown
When the chip setting temperature is 185ºC (typ) or more, the thermal shutdown function is activated to turn off the
charge pump circuit.
When this temperature falls below the thermal detection temperature, normal LSI operation is resumed. Accordingly,
the following ON and OFF operations are repeated as thermal operations unless the primary cause is resolved.
Thermal detection
Circuit OFF
Temperature drop
Circuit ON
Temperature
Fig.4 Thermal detection loop
7.
Setting the LED current
The LED current is set as follows.
The constant must be determined, considering variations in resistance and LED.
V
OUT
－V
F
I
LED
=
V
OUT
V
F
R
R
[A]
V
OUT
BZ1A5001GM
BD1603NUV
: BZ1A5001GM Output Voltage
: LED’s V
F
: LED setting register
V
F
R
Fig.5 LEDcurrent Setting
8.
Brightness control
Brightness control takes place in this LSI as follows.
a) PWM
The EN pin is turned ON or OFF repeatedly via the PWM signal.
It is recommended that the PWM frequency is 100Hz or below. This frequency must be determined, fully evaluating
the linearity of brightness to the PWM duty. If the rush current causes a problem when the EN pin is turned ON,
brightness control must be carried out by switching the LED current as discussed on the next section.
EN Signal
EN Signal
PWM
信号
BD1603NUV
EN
BZ1A5001GM
VOUT Voltage
VOUT Voltage
VIN Current
VIN Current
Fig.6
PWM Brightness control
Fig.7
VIN=4.5V100Hz ON/OFF
Fig.8
VIN=5.0V100Hz ON/OFF
b) Switching the LED Current
Switching the LED current takes place via the external switch.
The constant must be determined, considering the ON resistance of the switch transistor.
V
OUT
BZ1A5001GM
BD1603NUV
Fig.9
Brightness control by MOSFET
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
3/11
TSZ02201-0RGR0A100010-1-2
2013.02.15 Rev.002
BZ1A5001GM
●Absolute
Maximum Rating（Ta＝25℃）
Parameter
Power supply voltage
Power Dissipation
Operating Temperature
Storage Temperature
Junction Temperature
Symbol
VIN
Pd
Topr
Tstg
Tjmax
Ratings
6.3
0.75(*1)
-30 ½ +85
-55 ½ +125
+125
Unit
V
W
℃
℃
℃
Datasheet
(*1)Reduced
by 7.6mW/°C for each increase in Ta of 1°C over 25°C. (
During ROHM standard board implementation)
●Operating Range（Ta＝25℃）
Parameter
Power supply voltage
Max Current（t=500ms Duty=20%）
Start up Time（EN⇒Vo to 80％）
Off Time（EN⇒Vo to20%）(*2)
Symbol
Min
2.7
-
-
-
Limits
Typ
-
-
150
-
Max
5.5
200
300
1
Unit
V
½A
us
ms
VIN
Io(pulse)
Tr
Tf
(*2) Value when a 200Ω discharge resistor is connected.
● Electrical Characteristics (Ta=25℃，VIN = 3.6V, unless specified）
Limits
Parameter
Symbol
Min
Typ
【Regulator block】
Output Voltage 1
Output Voltage 2
Output Current 1
Output Current 2
Output Current 3
Output Current 4
【Oscillator Brock】
Frequency 1
Frequency 2
【Control Pin Block】
Active
EN Pin
Control Voltage
OFF
5.0V
VSEL Pin
Control Voltage
4.5V
High Freq
FSEL Pin
Control Voltage
Low Freq
【Efficiency】
Max
5.20
4.73
175
190
60
120
-
-
VIN
0.4
VIN
0.4
VIN
0.4
-
-
2.0
4.2
2
Unit
Condition
VOUT1
VOUT2
IOUT1
IOUT2
IOUT3
IOUT4
fosc1
fosc2
VENH
VENL
VSELH
VSELL
FSELH
FSELL
Eff1
Eff2
IINS1
IINS2
SHD
4.80
4.27
-
-
-
-
-
-
1.3
0
1.3
0
1.3
0
-
-
-
-
-
5.00
4.50
-
-
-
-
238
642
-
-
-
-
-
-
75
74.5
1.4
3.0
0
V
V
mA
mA
mA
mA
kHz
kHz
V
V
V
V
V
V
％
％
mA
mA
uA
VSEL=High
VSEL=Low
VSEL=VIN, 3.2＜VIN
VSEL=0V, 3.2V＜VIN
VSEL=VIN, 3.2V＞VIN
VSEL=0V, 3.2V＞VIN
FSEL=Low
FSEL=High
ON
OFF
Vout=5V
Vout=4.5V
OSC=642kHz
OSC=238kHz
FSEL=Low : Iout=60mA
FSEL=High : Iout=60mA
FSEL=Low
FSEL=High
EN=0V
Efficiency 1
Efficiency 2
【Circuit Current】
Circuit Current 1
Circuit Current 2
Shut down Current
◎
This product is not designed to protect itself against radioactive rays.
*1) Please design a VIN condition and a load current not to exceed Pd of the LSI.
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111
・
15
・
001
4/11
TSZ02201-0RGR0A100010-1-2
2013.02.15 Rev.002
BZ1A5001GM
●Reference data
Reference
2.5
Quiescent Current[mA]
Quiescent Current[mA]
2
1.5
1
0.5
0
2.5
Ta=25 C
o
Datasheet
4
3.5
3
2.5
2
1.5
1
0.5
0
2.5
3
3.5
4
4.5
5
5.5
Quiescent Current[µA]
Ta=25 C
o
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
2.5
3
3.5
4
4.5
5
5.5
Ta=25 C
o
3
3.5
4
4.5
5
5.5
Input Voltage[V]
Input Voltage[V]
Input Voltage[V]
Fig.10 Quiescent Current 1
Fig.11 Quiescent Current 2
Fig.12 Quiescent Current 3
5
4.9
4.8
Output Voltage[V]
4.7
4.6
4.5
4.4
4.3
4.2
4.1
4
3
3.5
4
4.5
5
5.5
Ta=25 C
Io=200mA
o
5.5
5.4
5.3
Out put Voltage[V]
5.2
5.1
5
4.9
4.8
4.7
4.6
4.5
3
3.5
4
4.5
5
5.5
Ta=25 C
Io=150mA
o
5
4.9
4.8
Input Voltage [V]
4.7
4.6
4.5
4.4
4.3
4.2
4.1
4
0
50
100
150
200
Ta=25 C
VIN=3.8V
o
Input Voltage[V]
Input Voltage [V]
Load Current [mA]
Fig.13 Line Regulation
(VSEL = 0V)
5.5
5.4
Output Voltage [V]
5.3
5.2
5.1
5
4.9
4.8
4.7
4.6
4.5
0
40
80
120
160
200
Load Current [mA]
Ta=25 C
VIN=3.8V
Efficiency [%]
o
Fig.14 Line Regulation
(VSEL = V
IN
)
90
80
70
50
40
30
20
10
0
3
3.2
3.4
3.6
3.8
4
4.2
Input Voltage [V]
Ta=25 C
Io=200mA
o
Fig.15 Load Regulation
(VSEL = 0V)
90
80
70
Efficiency [%]
60
50
40
30
20
10
0
3
3.2
3.4
3.6
3.8
4
4.2
Input Voltage[V]
Ta=25 C
Io=150mA
o
60
Fig.16 Load Regulation
(VSEL = V
IN
)
Fig.17 Efficiency vs. Input Voltage
(VSEL = 0V)
Fig.18 Efficiency vs. Input Voltage
(VSEL = V
IN
)
90
80
70
Efficiency [%]
50
40
30
20
10
0
0
50
100
150
200
Load Current [mA]
Ta=25
o
C
VIN=3.2V
Efficiency [%]
60
90
80
70
60
50
40
30
20
10
0
0
50
100
150
200
Load Current [mA]
Ta=25
o
C
VIN=3.2V
Fig.19 Efficiency vs. Load Current
(VSEL = 0V)
Fig.20 Efficiency vs. Load Current
(VSEL = V
IN
)
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111
・
15
・
001
5/11
TSZ02201-0RGR0A100010-1-2
2013.02.15 Rev.002
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