XC6601 Series
Low Voltage Input LDO Voltage Regulator with Soft-Start Function ■GENERAL DESCRIPTION
ETR0335_005
The XC6601 series is a low voltage input CMOS LDO regulator which provides highly accurate (±20mV) outputs and can supply current efficiently due to its ultra low on-resistance even at low output voltages. The series is ideally suited to the applications which require very low dropout voltage operation and consists of a voltage reference, an error amplifier, a driver transistor, a current limiter, a fold back circuit, a thermal shutdown (TSD) circuit, an under voltage lock out (UVLO) circuit, soft-start circuit and a phase compensation circuit. Output voltage is selectable in 0.05V increments within a range of 0.7V to 1.8V using laser trimming technology and ceramic capacitors can be used for the output stabilization capacitor (CL). The over current protection circuit (the current limiter and the fold back circuit) as well as the thermal shutdown circuit (the TSD circuit) are built-in. These two protection circuits will operate when either the output current reaches the current limit level or the junction temperature reaches the temperature limit level. With the built-in UVLO function, the regulator output is forced OFF when the voltage level at the VBIAS pin or the VIN pin falls below the UVLO voltage level. With the soft-start function, the inrush current from VIN to VOUT for charging CL at start-up can be reduced and makes the VIN stable. The CE function enables the output to be turned off and the series to be put in stand-by mode resulting in greatly reduced power consumption. At the time of entering the stand-by mode, the series enables the electric charge at the output capacitor (CL) to be discharged via the internal auto-discharge switch which is located between the VOUT pin and the VSS pin. As a result the VOUT pin quickly returns to the VSS level.
■APPLICATIONS
●Mobile phones ●Cordless phones ●Wireless communication equipment ●Portable games ●Cameras ●Audio visual equipment ●Portable AV equipment ●PDAs
■FEATURES
Maximum Output Current Dropout Voltage Bias Voltage Range Input Voltage Range Output Voltage Range Output Voltage Accuracy Power Consumption UVLO TSD (Detect/Release) Soft-Start Time Operating Temperature Range Function Low ESR Capacitor Packages
Environmentally Friendly
: 400mA (Limit:550mA TYP.) : 38mV@IOUT=100mA (TYP.) (at VBIAS - VOUT=2.4V) : 2.5V ~ 6.0V (VBIAS - VOUT≧1.2V) : 1.0V ~ 3.0V(VIN≦VBIAS) : 0.7V ~ 1.8V (0.05V increments) :±20mV : IBIAS=25μA , IIN=1.0μA (TYP.) IBIAS=0.01μA , IIN=0.01μA (TYP.) : VBIAS=2.0V, VIN=0.4V (TYP.) : 150℃/125℃ (TYP.) : 240μs @ VOUT=1.2V (TYP.) : -40℃ ~ +85℃ : CL High Speed Auto-Discharge : Ceramic Capacitor Compatible : USP-6C, SOT-25, SOT-89-5
: EU RoHS Compliant, Pb Free
■ TYPICAL APPLICATION CIRCUIT ■ TYPICAL PEFORMANCE CHARACTERISTICS ●VBIAS =3.6V , VIN =1.8V , VOUT =1.5V
●Dropout Voltage vs. Output Current
XC 6 6 0 1 B 1 2 1 M R Ta=25 [℃]
300 250 Dropout Voltage: Vdif(mV) 200 150 100 50 0 0 100 200 Output Current: IOUT(mA) 300 400
VBIAS=3.0V VBIAS=3.3V VBIAS=3.6V VBIAS=4.2V VBIAS=5.0V
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XC6601 Series
■PIN CONFIGURATION
●USP-6C ●SOT-25
VOUT 5 CE 4
●SOT-89-5
1 VIN
*The heat dissipation pad of the USP-6C
2 VBIAS SOT-25 (TOP VIEW)
3 VSS
package is recommended to solder as the recommended mount pattern and metal mask pattern for mounting strength. This pad should be electrically opened or connected to the VBIAS (No.1) pin.
■PIN ASSIGNMENT
PIN NUMBER USP-6C 1 3 4 2 6 SOT-25 2 1 5 3 4 SOT-89-5 2 4 5 3 1 PIN NAME VBIAS VIN VOUT VSS CE FUNCTION Power Supply Input Driver Transistor Input Output Ground ON/OFF Control
■PRODUCT CLASSIFICATION
●Ordering Information XC6601①②③④⑤⑥-⑦
MARK ① ②③
(*1)
: CE High Active, Soft-Start Function Built-in, CL Auto Discharge Function
SYMBOL A B 07 ~ 18 1 B MR DESCRIPTION Pull-Down Resistor Built-in No Pull-Down Resistor Built-in e.g.) VOUT(T)=1.2V⇒②=1,③=2 0.1V increments e.g.) 1.2V⇒②=1,③=2,④=1 0.05V increments e.g.) 1.25V⇒②=1,③=2,④=B SOT-25 SOT-25 (Halogen & Antimony free) USP-6C USP-6C (Halogen & Antimony free) SOT-89-5
DESCRIPTION Type of Regulators Output Voltage Output Voltage Type
④
⑤⑥-⑦
Packages Taping Type (*2)
MR-G ER ER-G PR
(*1) (*2)
The ”-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant. The device orientation is fixed in its embossed tape pocket. For reverse orientation, please contact your local Torex sales office or representative. (Standard orientation: ⑤R-⑦, Reverse orientation: ⑤L-⑦)
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XC6601
Series
■BLOCK DIAGRAMS
(1) XC6601A Series (1)XC6601ASeries
VBIAS VIN
Voltage Reference With Soft Start
+
Error Amp
-
VOUT
Under Voltage Lock Out CE/ Thermal Protection Current Limit R1
Rdischg
CE
ON/OFF Control CE R pull-down
each circuit
CE/
R2
VSS
(2) XC6601B Series (2)XC6601B Series
VBIAS VIN
Voltage Reference With Soft Start
+
Error Amp
-
VOUT
Under Voltage Lock Out CE/ Thermal Protection Current Limit R1
Rdischg
CE
ON/OFF Control CE
each circuit
CE/
R2
VSS
*Diodes inside the circuit are an ESD protection diode and a parasitic diode.
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XC6601 Series
■MAXIMUM ABSOLUTE RATINGS
Ta=25 ℃
PARAMETER Bias Voltage Input Voltage Output Current Output Voltage CE Input Voltage USP-6C Power Dissipation SOT-25 SOT-89-5 Pd SYMBOL VBIAS VIN IOUT VOUT VCE RATINGS VSS-0.3 ~ +7.0 VSS-0.3 ~ +7.0 700 (*1) VSS-0.3 ~ VBIAS+0.3 VSS-0.3 ~ VIN+0.3 VSS-0.3 ~ +7.0 100 1000 (PCB mounted) *2 250 600 (PCB mounted) *2 500 1300 (PCB mounted) *2 -40 ~ +85 -55 ~ +125 UNITS V V mA V V
mW
Operating Temperature Range Topr ℃ Storage Temperature Range Tstg ℃ (*1) IOUT=Less than Pd / (VIN-VOUT) (*2) The power dissipation figure shown is PCB mounted. Please refer to pages 29～31 for details.
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XC6601
Series
■ELECTRICAL CHARACTERISTICS
PARAMETER Bias Voltage Input Voltage
(*1) (*2)
Ta=25 ℃
MIN. 2.5 1.0 -0.02 TYP. VOUT(T)
E-0
(*4) (*5)
SYMBOL VBIAS VIN VOUT(E) (*3) IOUTMAX 1
CONDITIONS VCE =VBIAS,VIN =VOUT(T)+0.3V VBIAS=VCE=3.6V VBIAS=VCE=3.6V, VIN =VOUT(T)+0.3V, IOUT=100mA
MAX. 6.0 3.0 +0.02
UNITS CIRCUIT V V V mA mA mA mV mV mV mV mV
① ①
Output Voltage Maximum Output Current 1 Maximum Output Current 2 Maximum Output Current 3
① ① ① ① ① ① ① ① ① ① ①
VCE =VBIAS ,VBIAS -VOUT(T)≧1.2V VIN =VOUT(T)+0.5V VCE =VBIAS ,VBIAS -VOUT(T)≧1.3V IOUTMAX 2 VIN =VOUT(T)+0.5V VCE =VBIAS ,VBIAS -VOUT(T)≧1.5V IOUTMAX 3 VIN =VOUT(T)+0.5V VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V, Load Regulation △VOUT 1mA≦IOUT≦300mA Dropout Voltage 1 Vdif1(*7) VBIAS=VCE, IOUT=100mA Dropout Voltage 2 Vdif2 (*7) VCE =VBIAS , IOUT=200mA Dropout Voltage 3 Vdif3 (*7) VCE =VBIAS , IOUT=300mA Dropout Voltage 4 Vdif4 (*7) VCE =VBIAS , IOUT=400mA VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V Supply Current 1 IBIAS VOUT=OPEN VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V Supply Current 2 IIN VOUT=OPEN VOUT(T)≧1.0V VBIAS=VCE =3.6V, VIN=VOUT(T) VOUT= VOUT(T) - 0.05V Bias Current (*10) IBIASMAX VOUT(T)＜1.0V VBIAS=VCE =3.6V, VIN=1.0V VOUT= VOUT(T) - 0.05V Stand-by Current 1 IBIAS_STB VBIAS=6.0V, VIN=3.0V, VCE=VSS Stand-by Current 2 IIN_STB VBIAS=6.0V, VIN=3.0V, VCE=VSS VOUT(T)≧1.3V VOUT(T)+1.2V≦VBIAS≦6.0V, △VOUT/ VIN=VOUT(T)+0.3V, VCE =VBIAS , IOUT=1mA Bias Regulation (△VBIAS VOUT) ・ VOUT(T)＜1.3V 2.5V≦VBIAS≦6.0V, VIN=VOUT(T)+0.3V, VCE =VBIAS , IOUT=1mA VOUT(T)≧0.90V, VOUT(T)+0.1V≦VIN≦3.0V, VBIAS=VCE=3.6V, IOUT=1mA △VOUT/ Input Regulation (△VIN・VOUT) V OUT(T)＜0.90V, 1.0V≦VIN≦3.0V VBIAS=VCE=3.6V, IOUT=1mA VCE =VBIAS, VIN =VOUT(T)+0.3V, Bias Voltage UVLO VBIAS_UVLO IOUT=1mA Input Voltage UVLO VIN_UVLO VBIAS=VCE=3.6V, IOUT=1mA VBIAS= VCE =3.6VDC+0.2Vp-pAC, VBIAS Ripple Rejection VBIAS_PSRR VIN=VOUT(T)+0.3V, IOUT=30mA,f=1kHz VIN=VOUT(T)+0.3VDC+0.2Vp-pAC, VIN Ripple Rejection VIN_PSRR VBIAS=3.6V, IOUT=30mA, f=1kHz
200 300 400 -
8
E-1 E-2 E-3 E-4
(*6) (*6) (*6) (*6)
17
8 0.1
25 1.0
45 3.0
μA μA
-
1.0
2.5
mA
①
-
0.01 0.01
0.10 0.35
μA μA
① ①
-
0.01
0.3
%/V
①
-
0.01
0.1
%/V
①
1.37 0.07 -
2.0 0.4 40 60
2.5 0.6 -
V V dB dB
① ① ② ②
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XC6601 Series
■ELECTRICAL CHARACTERISTICS (Continued)
PARAMETER Output Voltage Temperature Characteristics Limit Current Short Current Thermal Shutdown Detect Temperature Thermal Shutdown Release Temperature Hysteresis Width CL Auto-Discharge Resistance CE "H" Level Voltage CE "L" Level Voltage CE "H" Level Current (A Series) CE "H" Level Current (B Series) CE "L" Level Current Soft-Start Time (*11) SYNBOL △VOUT/ △Topr・VOUT ILIM ISHORT TTSD TTSR TTSD－TTSR Rdischg VCEH VCEL ICEH VBIAS=3.6V, VIN= VOUT(T)+0.3V, VCE= VSS, VOUT=VOUT(T) VBIAS=3.6V, VIN= VOUT(T)+0.3V VBIAS=3.6V, VIN= VOUT(T)+0.3V VBIAS=VCE=6.0V, VIN=VOUT(T)+0.3V VBIAS=6.0V, VCE=VSS VIN=VOUT(T)+0.3V VBIAS=3.6V, VIN=VOUT(T)+0.3V, IOUT=1mA VCE=0V→3.6V CONDITIONS VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V , IOUT=30mA, - 40℃≦ Topr ≦85℃ VOUT=VOUT(E)×0.95, VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V, VOUT=0V Junction Temperature Junction Temperature MIN. 400 290 0.75 2.4 -0.1 -0.1 100 TYP. ±100 550 80 150 125 25 430 MAX. 610 6.0 0.16 8.0 μA 0.1 0.1 410 μA μs ① ③ ①
Ta=25 ℃
UNITS CIRCUIT ppm/℃ mA mA ℃ ℃ ℃ Ω V V ①
① ① ① ① ① ① ① ①
ICEL tSS
NOTE: (*3) * 1: Please use Bias voltage VBIAS within the range VBIAS –VOUT(E) ≧1.2V * 2: Please use Input voltage VIN within the range VIN≦VBIAS * 3: VOUT(E) = Effective output voltage (Refer to the voltage chart E-0 and E-1) * 4: VOUT (T) = Specified output voltage * 5: E-0 = Please refer to the table named OUTPUT VOLTAGE CHART * 6: E-1 = Please refer to the table named DROPOUT VOLTAGE CHART (*8) (*9) * 7: Vdif = {VIN1 -VOUT1 }. * 8: VIN1 = The input voltage when VOUT1 appears as input voltage is gradually decreased. * 9: VOUT1 = A voltage equal to 98% of the output voltage while maintaining an amply stabilized output voltage when VIN=VBIAS at VBIAS
